1
|
Mantel N, Piras-Douce F, Chautard E, Marcos-Lopez E, Bodinham CL, Cosma A, Courtois V, Dhooge N, Gautheron S, Kaufmann SHE, Pizzoferro K, Lewis DJM, Martinon F, Pagnon A, Raynal F, Dereuddre-Bosquet N, Le Grand R. Cynomolgus macaques as a translational model of human immune responses to yellow fever 17D vaccination. J Virol 2024; 98:e0151623. [PMID: 38567951 DOI: 10.1128/jvi.01516-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/22/2023] [Indexed: 05/15/2024] Open
Abstract
The non-human primate (NHP) model (specifically rhesus and cynomolgus macaques) has facilitated our understanding of the pathogenic mechanisms of yellow fever (YF) disease and allowed the evaluation of the safety and efficacy of YF-17D vaccines. However, the accuracy of this model in mimicking vaccine-induced immunity in humans remains to be fully determined. We used a systems biology approach to compare hematological, biochemical, transcriptomic, and innate and antibody-mediated immune responses in cynomolgus macaques and human participants following YF-17D vaccination. Immune response progression in cynomolgus macaques followed a similar course as in adult humans but with a slightly earlier onset. Yellow fever virus neutralizing antibody responses occurred earlier in cynomolgus macaques [by Day 7[(D7)], but titers > 10 were reached in both species by D14 post-vaccination and were not significantly different by D28 [plaque reduction neutralization assay (PRNT)50 titers 3.6 Log vs 3.5 Log in cynomolgus macaques and human participants, respectively; P = 0.821]. Changes in neutrophils, NK cells, monocytes, and T- and B-cell frequencies were higher in cynomolgus macaques and persisted for 4 weeks versus less than 2 weeks in humans. Low levels of systemic inflammatory cytokines (IL-1RA, IL-8, MIP-1α, IP-10, MCP-1, or VEGF) were detected in either or both species but with no or only slight changes versus baseline. Similar changes in gene expression profiles were elicited in both species. These included enriched and up-regulated type I IFN-associated viral sensing, antiviral innate response, and dendritic cell activation pathways D3-D7 post-vaccination in both species. Hematological and blood biochemical parameters remained relatively unchanged versus baseline in both species. Low-level YF-17D viremia (RNAemia) was transiently detected in some cynomolgus macaques [28% (5/18)] but generally absent in humans [except one participant (5%; 1/20)].IMPORTANCECynomolgus macaques were confirmed as a valid surrogate model for replicating YF-17D vaccine-induced responses in humans and suggest a key role for type I IFN.
Collapse
Affiliation(s)
| | | | | | - Ernesto Marcos-Lopez
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial diseases (IMVA-HB/IDMIT), Fontenay aux Roses, France
| | - Caroline L Bodinham
- Surrey Clinical Research Centre, University of Surrey, Guildford, Surrey, United Kingdom
| | - Antonio Cosma
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial diseases (IMVA-HB/IDMIT), Fontenay aux Roses, France
| | | | - Nina Dhooge
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial diseases (IMVA-HB/IDMIT), Fontenay aux Roses, France
| | | | - Stefan H E Kaufmann
- Max Planck Institute for Infection Biology, Berlin, Germany; Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Hagler Institute for Advanced Study, Texas A&M University, College Station, Texas, USA
| | - Kathleen Pizzoferro
- Surrey Clinical Research Centre, University of Surrey, Guildford, Surrey, United Kingdom
| | - David J M Lewis
- Surrey Clinical Research Centre, University of Surrey, Guildford, Surrey, United Kingdom
| | - Frédéric Martinon
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial diseases (IMVA-HB/IDMIT), Fontenay aux Roses, France
| | - Anke Pagnon
- Research and Development, Sanofi, Marcy L'Etoile, France
| | - Franck Raynal
- Research and Development, Sanofi, Marcy L'Etoile, France
| | - Nathalie Dereuddre-Bosquet
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial diseases (IMVA-HB/IDMIT), Fontenay aux Roses, France
| | - Roger Le Grand
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial diseases (IMVA-HB/IDMIT), Fontenay aux Roses, France
| |
Collapse
|
2
|
Gonçalves AP, Almeida LT, de Rezende IM, Fradico JRB, Pereira LS, Ramalho DB, Pascoal Xavier MA, Calzavara Silva CE, Monath TP, LaBeaud AD, Drumond BP, Campi-Azevedo AC, Martins-Filho OA, Teixeira-Carvalho A, Alves PA. Evaluation of humoral immune response after yellow fever infection: an observational study on patients from the 2017-2018 sylvatic outbreak in Brazil. Microbiol Spectr 2024; 12:e0370323. [PMID: 38511952 PMCID: PMC11064539 DOI: 10.1128/spectrum.03703-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 03/08/2024] [Indexed: 03/22/2024] Open
Abstract
Between 2016 and 2018, Brazil experienced major sylvatic yellow fever (YF) outbreaks that caused hundreds of casualties, with Minas Gerais (MG) being the most affected state. These outbreaks provided a unique opportunity to assess the immune response triggered by the wild-type (WT) yellow fever virus (YFV) in humans. The plaque reduction neutralization test (PRNT) is currently the standard method to assess the humoral immune response to YFV by measuring neutralizing antibodies (nAbs). The present study aimed to evaluate the humoral immune response of patients from the 2017-2018 sylvatic YF outbreak in MG with different disease outcomes by using PRNTs with a WT YFV strain, isolated from the 2017-2018 outbreak, and a vaccine YFV strain. Samples from naturally infected YF patients were tested, in comparison with healthy vaccinees. Results showed that both groups presented different levels of nAb against the WT and vaccine strains, and the levels of neutralization against the strains varied homotypically and heterotypically. Results based on the geometric mean titers (GMTs) suggest that the humoral immune response after a natural infection of YFV can reach higher levels than that induced by vaccination (GMT of patients against WT YFV compared to GMT of vaccinees, P < 0.0001). These findings suggest that the humoral immune responses triggered by the vaccine and WT strains of YFV are different, possibly due to genetic and antigenic differences between these viruses. Therefore, current means of assessing the immune response in naturally infected YF individuals and immunological surveillance methods in areas with intense viral circulation may need to be updated.IMPORTANCEYellow fever is a deadly febrile disease caused by the YFV. Despite the existence of effective vaccines, this disease still represents a public health concern worldwide. Much is known about the immune response against the vaccine strains of the YFV, but recent studies have shown that it differs from that induced by WT strains. The extent of this difference and the mechanisms behind it are still unclear. Thus, studies aimed to better understand the immune response against this virus are relevant and necessary. The present study evaluated levels of neutralizing antibodies of yellow fever patients from recent outbreaks in Brazil, in comparison with healthy vaccinees, using plaque reduction neutralization tests with WT and vaccine YFV strains. Results showed that the humoral immune response in naturally infected patients was higher than that induced by vaccination, thus providing new insights into the immune response triggered against these viruses.
Collapse
Affiliation(s)
| | - Letícia Trindade Almeida
- Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ-Minas), Belo Horizonte, Minas Gerais, Brazil
| | - Izabela Maurício de Rezende
- Department of Pediatrics, Infectious Disease Division, Stanford University School of Medicine, Stanford, California, USA
| | | | - Leonardo Soares Pereira
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Hospital Eduardo de Menezes (HEM), Fundação Hospitalar do Estado de Minas Gerais (FHEMIG), Belo Horizonte, Minas Gerais, Brazil
| | - Dario Brock Ramalho
- Hospital Eduardo de Menezes (HEM), Fundação Hospitalar do Estado de Minas Gerais (FHEMIG), Belo Horizonte, Minas Gerais, Brazil
| | - Marcelo Antônio Pascoal Xavier
- Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ-Minas), Belo Horizonte, Minas Gerais, Brazil
- Departamento de Anatomia Patológica e Medicina Legal, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | | | - Angelle Desiree LaBeaud
- Department of Pediatrics, Infectious Disease Division, Stanford University School of Medicine, Stanford, California, USA
| | - Betania Paiva Drumond
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | | | - Andréa Teixeira-Carvalho
- Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ-Minas), Belo Horizonte, Minas Gerais, Brazil
| | - Pedro Augusto Alves
- Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ-Minas), Belo Horizonte, Minas Gerais, Brazil
| | - Grupo de Estudos de Pesquisa e Resposta em Febre Amarela do Estado de Minas Gerais
- Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ-Minas), Belo Horizonte, Minas Gerais, Brazil
- Department of Pediatrics, Infectious Disease Division, Stanford University School of Medicine, Stanford, California, USA
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Hospital Eduardo de Menezes (HEM), Fundação Hospitalar do Estado de Minas Gerais (FHEMIG), Belo Horizonte, Minas Gerais, Brazil
- Departamento de Anatomia Patológica e Medicina Legal, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Crozet BioPharma LLC, Lexington, Massachusetts, USA
| |
Collapse
|
3
|
Bonney JHK, Sanders T, Pratt D, Agbodzi B, Laryea D, Agyeman NKF, Kumordjie S, Attiku K, Adams PL, Boateng GA, Ohene SA, Tamal C, Mawuli G, Yeboah C, Dadzie S, Kubio C, Asiedu-Bekoe F, Odoom JK. Molecular Characterization of Circulating Yellow Fever Viruses from Outbreak in Ghana, 2021-2022. Emerg Infect Dis 2023; 29:1818-1826. [PMID: 37610174 PMCID: PMC10461649 DOI: 10.3201/eid2909.221671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023] Open
Abstract
Yellow fever virus, transmitted by infected Aedes spp. mosquitoes, causes an acute viral hemorrhagic disease. During October 2021-February 2022, a yellow fever outbreak in some communities in Ghana resulted in 70 confirmed cases with 35 deaths (case-fatality rate 50%). The outbreak started in a predominantly unvaccinated nomadic community in the Savannah region, from which 65% of the cases came. The molecular amplification methods we used for diagnosis produced full-length DNA sequences from 3 confirmed cases. Phylogenetic analysis characterized the 3 sequences within West Africa genotype II; strains shared a close homology with sequences from Cote d'Ivoire and Senegal. We deployed more sensitive advanced molecular diagnostic techniques, which enabled earlier detection, helped control spread, and improved case management. We urge increased efforts from health authorities to vaccinate vulnerable groups in difficult-to-access areas and to educate the population about potential risks for yellow fever infections.
Collapse
|
4
|
Li D, Lu HT, Ding YZ, Wang HJ, Ye JL, Qin CF, Liu ZY. Specialized cis-Acting RNA Elements Balance Genome Cyclization to Ensure Efficient Replication of Yellow Fever Virus. J Virol 2023; 97:e0194922. [PMID: 37017533 PMCID: PMC10134800 DOI: 10.1128/jvi.01949-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 03/13/2023] [Indexed: 04/06/2023] Open
Abstract
Genome cyclization is essential for viral RNA (vRNA) replication of the vertebrate-infecting flaviviruses, and yet its regulatory mechanisms are not fully understood. Yellow fever virus (YFV) is a notorious pathogenic flavivirus. Here, we demonstrated that a group of cis-acting RNA elements in YFV balance genome cyclization to govern efficient vRNA replication. It was shown that the downstream of the 5'-cyclization sequence hairpin (DCS-HP) is conserved in the YFV clade and is important for efficient YFV propagation. By using two different replicon systems, we found that the function of the DCS-HP is determined primarily by its secondary structure and, to a lesser extent, by its base-pair composition. By combining in vitro RNA binding and chemical probing assays, we found that the DCS-HP orchestrates the balance of genome cyclization through two different mechanisms, as follows: the DCS-HP assists the correct folding of the 5' end in a linear vRNA to promote genome cyclization, and it also limits the overstabilization of the circular form through a potential crowding effect, which is influenced by the size and shape of the DCS-HP structure. We also provided evidence that an A-rich sequence downstream of the DCS-HP enhances vRNA replication and contributes to the regulation of genome cyclization. Interestingly, diversified regulatory mechanisms of genome cyclization, involving both the downstream of the 5'-cyclization sequence (CS) and the upstream of the 3'-CS elements, were identified among different subgroups of the mosquito-borne flaviviruses. In summary, our work highlighted how YFV precisely controls the balance of genome cyclization to ensure viral replication. IMPORTANCE Yellow fever virus (YFV), the prototype of the Flavivirus genus, can cause devastating yellow fever disease. Although it is preventable by vaccination, there are still tens of thousands of yellow fever cases per year, and no approved antiviral medicine is available. However, the understandings about the regulatory mechanisms of YFV replication are obscure. In this study, by a combination of bioinformatics, reverse genetics, and biochemical approaches, it was shown that the downstream of the 5'-cyclization sequence hairpin (DCS-HP) promotes efficient YFV replication by modulating the conformational balance of viral RNA. Interestingly, we found specialized combinations for the downstream of the 5'-cyclization sequence (CS) and upstream of the 3'-CS elements in different groups of the mosquito-borne flaviviruses. Moreover, possible evolutionary relationships among the various downstream of the 5'-CS elements were implied. This work highlighted the complexity of RNA-based regulatory mechanisms in the flaviviruses and will facilitate the design of RNA structure-targeted antiviral therapies.
Collapse
Affiliation(s)
- Dan Li
- The Centre for Infection and Immunity Studies, School of Medicine, Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Hai-Tao Lu
- The Centre for Infection and Immunity Studies, School of Medicine, Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Yu-Zhen Ding
- The Centre for Infection and Immunity Studies, School of Medicine, Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Hong-Jiang Wang
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China
- The Chinese People’s Liberation Army Strategic Support Force Characteristic Medical Center, Beijing, China
| | - Jing-Long Ye
- The Centre for Infection and Immunity Studies, School of Medicine, Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Cheng-Feng Qin
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China
| | - Zhong-Yu Liu
- The Centre for Infection and Immunity Studies, School of Medicine, Sun Yat-sen University, Shenzhen, Guangdong, China
| |
Collapse
|
5
|
Li SL, Acosta AL, Hill SC, Brady OJ, de Almeida MAB, Cardoso JDC, Hamlet A, Mucci LF, Telles de Deus J, Iani FCM, Alexander NS, Wint GRW, Pybus OG, Kraemer MUG, Faria NR, Messina JP. Mapping environmental suitability of Haemagogus and Sabethes spp. mosquitoes to understand sylvatic transmission risk of yellow fever virus in Brazil. PLoS Negl Trop Dis 2022; 16:e0010019. [PMID: 34995277 PMCID: PMC8797211 DOI: 10.1371/journal.pntd.0010019] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 01/28/2022] [Accepted: 11/23/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Yellow fever (YF) is an arboviral disease which is endemic to Brazil due to a sylvatic transmission cycle maintained by infected mosquito vectors, non-human primate (NHP) hosts, and humans. Despite the existence of an effective vaccine, recent sporadic YF epidemics have underscored concerns about sylvatic vector surveillance, as very little is known about their spatial distribution. Here, we model and map the environmental suitability of YF's main vectors in Brazil, Haemagogus spp. and Sabethes spp., and use human population and NHP data to identify locations prone to transmission and spillover risk. METHODOLOGY/PRINCIPAL FINDINGS We compiled a comprehensive set of occurrence records on Hg. janthinomys, Hg. leucocelaenus, and Sabethes spp. from 1991-2019 using primary and secondary data sources. Linking these data with selected environmental and land-cover variables, we adopted a stacked regression ensemble modelling approach (elastic-net regularized GLM, extreme gradient boosted regression trees, and random forest) to predict the environmental suitability of these species across Brazil at a 1 km x 1 km resolution. We show that while suitability for each species varies spatially, high suitability for all species was predicted in the Southeastern region where recent outbreaks have occurred. By integrating data on NHP host reservoirs and human populations, our risk maps further highlight municipalities within the region that are prone to transmission and spillover. CONCLUSIONS/SIGNIFICANCE Our maps of sylvatic vector suitability can help elucidate potential locations of sylvatic reservoirs and be used as a tool to help mitigate risk of future YF outbreaks and assist in vector surveillance. Furthermore, at-risk regions identified from our work could help disease control and elucidate gaps in vaccination coverage and NHP host surveillance.
Collapse
Affiliation(s)
- Sabrina L. Li
- School of Geography and the Environment, University of Oxford, Oxford, United Kingdom
- * E-mail: (SLL); (JPM)
| | - André L. Acosta
- Departamento de Ecologia, Instituto de Biociências, Laboratório de Ecologia de Paisagens e Conservação—LEPAC, Universidade de São Paulo, São Paulo, Brazil
| | - Sarah C. Hill
- Department of Pathobiology and Population Sciences, Royal Veterinary College London, London, United Kingdom
| | - Oliver J. Brady
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Marco A. B. de Almeida
- State Centre of Health Surveillance, Rio Grande do Sul State Health Secretariat, Rio Grande do Sul, Brazil
| | - Jader da C. Cardoso
- State Centre of Health Surveillance, Rio Grande do Sul State Health Secretariat, Rio Grande do Sul, Brazil
| | - Arran Hamlet
- MRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom
| | - Luis F. Mucci
- Superintendence for Endemic Diseases Control, São Paulo State Health Secretariat, São Paulo, Brazil
| | - Juliana Telles de Deus
- Superintendence for Endemic Diseases Control, São Paulo State Health Secretariat, São Paulo, Brazil
| | | | - Neil S. Alexander
- Environmental Research Group Oxford, c/o Department of Zoology, University of Oxford, Oxford, United Kingdom
| | - G. R. William Wint
- Environmental Research Group Oxford, c/o Department of Zoology, University of Oxford, Oxford, United Kingdom
| | - Oliver G. Pybus
- Department of Pathobiology and Population Sciences, Royal Veterinary College London, London, United Kingdom
- Department of Zoology, University of Oxford, Oxford, United Kingdom
| | | | - Nuno R. Faria
- MRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom
- Department of Zoology, University of Oxford, Oxford, United Kingdom
- Departamento de Molestias Infecciosas e Parasitarias & Instituto de Medicina Tropical da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Jane P. Messina
- School of Geography and the Environment, University of Oxford, Oxford, United Kingdom
- Oxford School of Global and Area Studies, University of Oxford, Oxford, United Kingdom
- * E-mail: (SLL); (JPM)
| |
Collapse
|
6
|
Vicente Santos AC, Guedes-da-Silva FH, Dumard CH, Ferreira VNS, da Costa IPS, Machado RA, Barros-Aragão FGQ, Neris RLS, dos-Santos JS, Assunção-Miranda I, Figueiredo CP, Dias AA, Gomes AMO, de Matos Guedes HL, Oliveira AC, Silva JL. Yellow fever vaccine protects mice against Zika virus infection. PLoS Negl Trop Dis 2021; 15:e0009907. [PMID: 34735450 PMCID: PMC8594798 DOI: 10.1371/journal.pntd.0009907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/16/2021] [Accepted: 10/13/2021] [Indexed: 11/23/2022] Open
Abstract
Zika virus (ZIKV) emerged as an important infectious disease agent in Brazil in 2016. Infection usually leads to mild symptoms, but severe congenital neurological disorders and Guillain-Barré syndrome have been reported following ZIKV exposure. Creating an effective vaccine against ZIKV is a public health priority. We describe the protective effect of an already licensed attenuated yellow fever vaccine (YFV, 17DD) in type-I interferon receptor knockout mice (A129) and immunocompetent BALB/c and SV-129 (A129 background) mice infected with ZIKV. YFV vaccination provided protection against ZIKV, with decreased mortality in A129 mice, a reduction in the cerebral viral load in all mice, and weight loss prevention in BALB/c mice. The A129 mice that were challenged two and three weeks after the first dose of the vaccine were fully protected, whereas partial protection was observed five weeks after vaccination. In all cases, the YFV vaccine provoked a substantial decrease in the cerebral viral load. YFV immunization also prevented hippocampal synapse loss and microgliosis in ZIKV-infected mice. Our vaccine model is T cell-dependent, with AG129 mice being unable to tolerate immunization (vaccination is lethal in this mouse model), indicating the importance of IFN-γ in immunogenicity. To confirm the role of T cells, we immunized nude mice that we demonstrated to be very susceptible to infection. Immunization with YFV and challenge 7 days after booster did not protect nude mice in terms of weight loss and showed partial protection in the survival curve. When we evaluated the humoral response, the vaccine elicited significant antibody titers against ZIKV; however, it showed no neutralizing activity in vitro and in vivo. The data indicate that a cell-mediated response promotes protection against cerebral infection, which is crucial to vaccine protection, and it appears to not necessarily require a humoral response. This protective effect can also be attributed to innate factors, but more studies are needed to strengthen this hypothesis. Our findings open the way to using an available and inexpensive vaccine for large-scale immunization in the event of a ZIKV outbreak. Zika virus (ZIKV) is as an important infectious that may result in severe congenital neurological disorders. Our study reports that the current attenuated yellow fever vaccine is effective in immunizing against the infection caused by the Zika virus, due to the similarity between the two viruses. To study the efficacy of the vaccine, we used different mouse strains, including both animals with a healthy immune system (immunocompetent) and animals with compromised immune systems and therefore more susceptible to viral (immunocompromised) infections. The vaccine was given subcutaneously, as it does in humans. The animals were inoculated with the Zika virus directly into the brain—a protocol normally adopted in vaccine studies to simulate a high lethality infection. In all cases, the vaccinated mice developed a high degree of protection against Zika infection. Altogether, we demonstrate that the YFV vaccine elicits an immune response that protects against cerebral infection by ZIKV. Our findings suggest the possibility of using an available and inexpensive vaccine for large-scale immunization in the event of a ZIKV outbreak.
Collapse
Affiliation(s)
- Ana C. Vicente Santos
- Laboratório de Biologia Estrutural de Vírus, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem (CENABIO), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Francisca H. Guedes-da-Silva
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem (CENABIO), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Termodinâmica de Proteínas e Vírus Gregorio Weber, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Carlos H. Dumard
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem (CENABIO), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Termodinâmica de Proteínas e Vírus Gregorio Weber, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Vivian N. S. Ferreira
- Laboratório de Biologia Estrutural de Vírus, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem (CENABIO), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Igor P. S. da Costa
- Laboratório de Biologia Estrutural de Vírus, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem (CENABIO), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ruana A. Machado
- Laboratório de Biologia Estrutural de Vírus, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem (CENABIO), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Rômulo L. S. Neris
- Laboratório de Imunobiotecnologia, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Júlio S. dos-Santos
- Laboratório de Imunobiotecnologia, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Iranaia Assunção-Miranda
- Laboratório de Imunobiotecnologia, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Claudia P. Figueiredo
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - André A. Dias
- Laboratório de Microbiologia Celular, Instituto Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - Andre M. O. Gomes
- Laboratório de Biologia Estrutural de Vírus, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem (CENABIO), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Herbert L. de Matos Guedes
- Laboratório de Imunobiotecnologia, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail: (HLMG); (ACO); j (JLS)
| | - Andrea C. Oliveira
- Laboratório de Biologia Estrutural de Vírus, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem (CENABIO), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail: (HLMG); (ACO); j (JLS)
| | - Jerson L. Silva
- Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Centro Nacional de Biologia Estrutural e Bioimagem (CENABIO), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Termodinâmica de Proteínas e Vírus Gregorio Weber, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- * E-mail: (HLMG); (ACO); j (JLS)
| |
Collapse
|
7
|
Diagne MM, Ndione MHD, Gaye A, Barry MA, Diallo D, Diallo A, Mwakibete LL, Diop M, Ndiaye EH, Ahyong V, Diouf B, Mhamadi M, Diagne CT, Danfakha F, Diop B, Faye O, Loucoubar C, Fall G, Tato CM, Sall AA, Weaver SC, Diallo M, Faye O. Yellow Fever Outbreak in Eastern Senegal, 2020-2021. Viruses 2021; 13:v13081475. [PMID: 34452343 PMCID: PMC8402698 DOI: 10.3390/v13081475] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 07/23/2021] [Accepted: 07/24/2021] [Indexed: 01/07/2023] Open
Abstract
Yellow fever virus remains a major threat in low resource countries in South America and Africa despite the existence of an effective vaccine. In Senegal and particularly in the eastern part of the country, periodic sylvatic circulation has been demonstrated with varying degrees of impact on populations in perpetual renewal. We report an outbreak that occurred from October 2020 to February 2021 in eastern Senegal, notified and managed through the synergistic effort yellow fever national surveillance implemented by the Senegalese Ministry of Health in collaboration with the World Health Organization, the countrywide 4S network set up by the Ministry of Health, the Institut Pasteur de Dakar, and the surveillance of arboviruses and hemorrhagic fever viruses in human and vector populations implemented since mid 2020 in eastern Senegal. Virological analyses highlighted the implication of sylvatic mosquito species in virus transmission. Genomic analysis showed a close relationship between the circulating strain in eastern Senegal, 2020, and another one from the West African lineage previously detected and sequenced two years ago from an unvaccinated Dutch traveler who visited the Gambia and Senegal before developing signs after returning to Europe. Moreover, genome analysis identified a 6-nucleotide deletion in the variable domain of the 3′UTR with potential impact on the biology of the viral strain that merits further investigations. Integrated surveillance of yellow fever virus but also of other arboviruses of public health interest is crucial in an ecosystem such as eastern Senegal.
Collapse
Affiliation(s)
- Moussa Moïse Diagne
- Virology Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.H.D.N.); (M.M.); (C.T.D.); (O.F.); (G.F.); (A.A.S.); (O.F.)
- Correspondence: ; Tel.: +221-77-405-9928
| | - Marie Henriette Dior Ndione
- Virology Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.H.D.N.); (M.M.); (C.T.D.); (O.F.); (G.F.); (A.A.S.); (O.F.)
| | - Alioune Gaye
- Zoology Medical Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (A.G.); (D.D.); (E.H.N.); (B.D.); (M.D.)
| | - Mamadou Aliou Barry
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.A.B.); (A.D.); (M.D.); (C.L.)
| | - Diawo Diallo
- Zoology Medical Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (A.G.); (D.D.); (E.H.N.); (B.D.); (M.D.)
| | - Amadou Diallo
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.A.B.); (A.D.); (M.D.); (C.L.)
| | - Lusajo L. Mwakibete
- Chan Zuckerberg Biohub, San Francisco, CA 94158, USA; (L.L.M.); (V.A.); (C.M.T.)
| | - Mamadou Diop
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.A.B.); (A.D.); (M.D.); (C.L.)
| | - El Hadji Ndiaye
- Zoology Medical Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (A.G.); (D.D.); (E.H.N.); (B.D.); (M.D.)
| | - Vida Ahyong
- Chan Zuckerberg Biohub, San Francisco, CA 94158, USA; (L.L.M.); (V.A.); (C.M.T.)
| | - Babacar Diouf
- Zoology Medical Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (A.G.); (D.D.); (E.H.N.); (B.D.); (M.D.)
| | - Moufid Mhamadi
- Virology Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.H.D.N.); (M.M.); (C.T.D.); (O.F.); (G.F.); (A.A.S.); (O.F.)
| | - Cheikh Tidiane Diagne
- Virology Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.H.D.N.); (M.M.); (C.T.D.); (O.F.); (G.F.); (A.A.S.); (O.F.)
| | - Fodé Danfakha
- Kedougou Medical Region, Ministry of Health, Kedougou 26005, Senegal;
| | - Boly Diop
- Prevention Department, Ministry of Health, Dakar 220, Senegal;
| | - Oumar Faye
- Virology Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.H.D.N.); (M.M.); (C.T.D.); (O.F.); (G.F.); (A.A.S.); (O.F.)
| | - Cheikh Loucoubar
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.A.B.); (A.D.); (M.D.); (C.L.)
| | - Gamou Fall
- Virology Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.H.D.N.); (M.M.); (C.T.D.); (O.F.); (G.F.); (A.A.S.); (O.F.)
| | - Cristina M. Tato
- Chan Zuckerberg Biohub, San Francisco, CA 94158, USA; (L.L.M.); (V.A.); (C.M.T.)
| | - Amadou Alpha Sall
- Virology Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.H.D.N.); (M.M.); (C.T.D.); (O.F.); (G.F.); (A.A.S.); (O.F.)
| | - Scott C. Weaver
- World Reference Center for Emerging Viruses and Arboviruses, Institute for Human Infections and Immunity and Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA;
| | - Mawlouth Diallo
- Zoology Medical Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (A.G.); (D.D.); (E.H.N.); (B.D.); (M.D.)
| | - Ousmane Faye
- Virology Department, Institut Pasteur de Dakar, Dakar 220, Senegal; (M.H.D.N.); (M.M.); (C.T.D.); (O.F.); (G.F.); (A.A.S.); (O.F.)
| |
Collapse
|
8
|
Pan YG, Aiamkitsumrit B, Bartolo L, Wang Y, Lavery C, Marc A, Holec PV, Rappazzo CG, Eilola T, Gimotty PA, Hensley SE, Antia R, Zarnitsyna VI, Birnbaum ME, Su LF. Vaccination reshapes the virus-specific T cell repertoire in unexposed adults. Immunity 2021; 54:1245-1256.e5. [PMID: 34004140 PMCID: PMC8192456 DOI: 10.1016/j.immuni.2021.04.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 02/01/2021] [Accepted: 04/21/2021] [Indexed: 11/30/2022]
Abstract
We examined how baseline CD4+ T cell repertoire and precursor states impact responses to pathogen infection in humans using primary immunization with yellow fever virus (YFV) vaccine. YFV-specific T cells in unexposed individuals were identified by peptide-MHC tetramer staining and tracked pre- and post-vaccination by tetramers and TCR sequencing. A substantial number of YFV-reactive T cells expressed memory phenotype markers and contained expanded clones in the absence of exposure to YFV. After vaccination, pre-existing YFV-specific T cell populations with low clonal diversity underwent limited expansion, but rare populations with a reservoir of unexpanded TCRs generated robust responses. These altered dynamics reorganized the immunodominance hierarchy and resulted in an overall increase in higher avidity T cells. Thus, instead of further increasing the representation of dominant clones, YFV vaccination recruits rare and more responsive T cells. Our findings illustrate the impact of vaccines in prioritizing T cell responses and reveal repertoire reorganization as a key component of effective vaccination.
Collapse
Affiliation(s)
- Yi-Gen Pan
- Department of Medicine, Division of Rheumatology, Perelman School of Medicine, Institute for Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Benjamas Aiamkitsumrit
- Department of Medicine, Division of Rheumatology, Perelman School of Medicine, Institute for Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Laurent Bartolo
- Department of Medicine, Division of Rheumatology, Perelman School of Medicine, Institute for Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yifeng Wang
- Department of Medicine, Division of Rheumatology, Perelman School of Medicine, Institute for Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Criswell Lavery
- Department of Medicine, Division of Rheumatology, Perelman School of Medicine, Institute for Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA; Corporal Michael J Crescenz VA Medical Center, Philadelphia, PA 19104, USA
| | - Adam Marc
- Department of Medicine, Division of Rheumatology, Perelman School of Medicine, Institute for Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA; Corporal Michael J Crescenz VA Medical Center, Philadelphia, PA 19104, USA
| | - Patrick V Holec
- Department of Biological Engineering, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - C Garrett Rappazzo
- Department of Biological Engineering, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Theresa Eilola
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Phyllis A Gimotty
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Scott E Hensley
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Rustom Antia
- Department of Biology, Emory University, Atlanta, GA, USA
| | | | - Michael E Birnbaum
- Department of Biological Engineering, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Laura F Su
- Department of Medicine, Division of Rheumatology, Perelman School of Medicine, Institute for Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA; Corporal Michael J Crescenz VA Medical Center, Philadelphia, PA 19104, USA.
| |
Collapse
|
9
|
Idoko OT, Domingo C, Tapia MD, Sow SO, Geldmacher C, Saathoff E, Kampmann B. Serological Protection 5-6 Years Post Vaccination Against Yellow Fever in African Infants Vaccinated in Routine Programmes. Front Immunol 2020; 11:577751. [PMID: 33133096 PMCID: PMC7578390 DOI: 10.3389/fimmu.2020.577751] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/03/2020] [Indexed: 11/17/2022] Open
Abstract
Introduction: Although effective live attenuated yellow fever (YF) vaccines have been available for over 9 decades sporadic outbreaks continue to occur in endemic regions. These may be linked to several factors including epidemiological factors such as vector and intermediate host distribution or vaccine coverage and efficacy. The World Health Organization's research priorities include gathering systematic evidence around the potential need for booster vaccination with YF vaccine whether this follows full or fractional doses in children. Knowledge on the longevity of response to YF vaccine and the implications of this response needs to be consolidated to guide future vaccination policy. Methods: We measured anti-YF IgG by microneutralization assay in a group of 481 African infants who had received YF vaccine as part of routine EPI programmes, to explore serological protection from YF 5-6 years post YF vaccination, as well as the effect of co variates. Findings: Notably, 22.2% of the cohort had undetectable antibody concentrations, with another 7.5% revealing concentrations below the threshold of seropositivity of 0.5 IU/mL. Sex, season, country and time since vaccination did not affect the longevity of antibody concentration or having antibody concentrations above a defined threshold. Conclusion: Roughly 30% of children in this cohort did not demonstrate anti-yellow fever antibody concentrations above the defined threshold of protection, with 20% having no demonstrable antibody. Knowledge on the longevity of response to YF vaccine and the implications needs to be consolidated to guide future vaccination policy.
Collapse
Affiliation(s)
- Olubukola T. Idoko
- Vaccines and Immunity Theme, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, Fajara, Gambia
- CIH Center for International Health, Medical Center of the University of Munich (Ludwig-Maximilians-Universität München), Munich, Germany
| | - Cristina Domingo
- Centre for Biological Threats and Special Pathogens, Robert Koch Institute, Berlin, Germany
| | - Milagritos D. Tapia
- Centre pour le Développement des Vaccins, University of Maryland, Bamako, Mali
| | - Samba O. Sow
- Centre pour le Développement des Vaccins, University of Maryland, Bamako, Mali
| | - Christof Geldmacher
- Division of Infectious Diseases and Tropical Medicine, University Hospital, Ludwig-Maximilians-Universität München Munich, Munich, Germany
- German Centre for Infection Research (Deutsches Zentrum für Infektionsforschung), Munich, Germany
| | - Elmar Saathoff
- Division of Infectious Diseases and Tropical Medicine, University Hospital, Ludwig-Maximilians-Universität München Munich, Munich, Germany
- German Centre for Infection Research (Deutsches Zentrum für Infektionsforschung), Munich, Germany
| | - Beate Kampmann
- Vaccines and Immunity Theme, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, Fajara, Gambia
- The Vaccine Centre, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| |
Collapse
|
10
|
Endale A, Michlmayr D, Abegaz WE, Asebe G, Larrick JW, Medhin G, Legesse M. Community-based sero-prevalence of chikungunya and yellow fever in the South Omo Valley of Southern Ethiopia. PLoS Negl Trop Dis 2020; 14:e0008549. [PMID: 32881913 PMCID: PMC7470273 DOI: 10.1371/journal.pntd.0008549] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 07/01/2020] [Indexed: 12/31/2022] Open
Abstract
Background Chikungunya (CHIK) and yellow fever (YF) are becoming major public health threats in East African countries including Ethiopia. In Ethiopia, there is no reliable information about the epidemiology of CHIK. This study aimed to assess a community-based sero-prevalence of CHIK and YF in the South Omo Valley, an endemic area for YF. Methods Between February and June 2018, blood samples were collected from study participants and screened for IgG antibody against CHIK virus (CHIKV) and YF virus (YFV) infections using ELISA. Data were computerized using Epi Data Software v.3.1 and analyzed using SPSS. Results A total of 360 participants (51.7% males, age range from 6 to 80, mean age ± SD = 31.95 ± 14.05 years) participated in this study. The overall sero-prevalence of IgG antibody was 43.6% (157/360) against CHIKV, while it was 49.5% (155/313) against YFV. Out of 155 samples which were positive for IgG antibody to YFV, 93 (60.0%) were positive for IgG antibody to CHIKV. Out of 158 samples which were negative for IgG antibody to YFV, 64(40.5%) were positive for IgG antibody to CHIKV. There was a significant positive correlation between IgG antibodies to CHIKV and YFV (sr = 0.82; P<0.01). Residency in the Debub Ari district (AOR = 8.47; 95% CI: 1.50, 47.74) and travel history to sylvatic areas (AOR = 2.21; 95% CI: 1.02, 4.81) were significantly and positively associated with high sero-prevalence of IgG antibody to CHIKV and YFV, respectively. Conclusion High sero-prevalence of IgG antibody to CHIKV shows the circulation of the virus in the present study area. A low sero-prevalence of IgG antibody to YFV in YF vaccine received individuals is highly concerning from a public health point of view as waning of immune response to YFV infection could result in a periodic outbreaks of YF in endemic areas.Nevertheless, the present study has not investigated for possible cross-reactivity of antibody to CHIKV with other alphaviruses like O’nyong-nyong virus and antibody to YFV with other flaviviruses like Dengue fever virus and this warrants further studies in the present study area. Mosquito-borne viral diseases including yellow fever and chikungunya are becoming major public health problem in Africa. Community-based sero-epidemiological studies of mosquito-borne viral infections are important to known the occurrence of these diseases and to design appropriate prevention and control strategies. In this study, we assessed the sero-prevalence of IgG antibody against Chikungunya virus and Yellow fever virus in 360 study participants and associated risk factors among the community members of South Omo, Southern Ethiopia. Our study showed a sero-prevalence of IgG antibody; 43.6%, (157 out of 360) to Chikungunya virus, and 49.5% (155 out of 313) against Yellow fever virus in the study participants.Further studies on active case detection of chikungunya and raising awareness, advocating policies to mitigate the risk of arboviral infections have paramount importance in the present study area.
Collapse
Affiliation(s)
- Adugna Endale
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
- School of Medicine, College of Medicine and Health Sciences, Dire Dawa University, Dire Dawa, Ethiopia
| | - Daniela Michlmayr
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California Berkeley, Berkeley, California, United States of America
| | - Woldaregay Erku Abegaz
- Department of Microbiology, Immunology & Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Getahun Asebe
- Department of Veterinary Microbiology, Immunology and Public Health, College of Veterinary Medicine, Addis Ababa University, Bishoftu, Ethiopia
- College of Agriculture and Natural Resources, Gambella University, Gambella, Ethiopia
| | - James W. Larrick
- Panorama Research Institute, Sunnyvale, California, United States of America
| | - Girmay Medhin
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Mengistu Legesse
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
- * E-mail:
| |
Collapse
|
11
|
Stryhn A, Kongsgaard M, Rasmussen M, Harndahl MN, Østerbye T, Bassi MR, Thybo S, Gabriel M, Hansen MB, Nielsen M, Christensen JP, Randrup Thomsen A, Buus S. A Systematic, Unbiased Mapping of CD8 + and CD4 + T Cell Epitopes in Yellow Fever Vaccinees. Front Immunol 2020; 11:1836. [PMID: 32983097 PMCID: PMC7489334 DOI: 10.3389/fimmu.2020.01836] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 07/08/2020] [Indexed: 12/30/2022] Open
Abstract
Examining CD8+ and CD4+ T cell responses after primary Yellow Fever vaccination in a cohort of 210 volunteers, we have identified and tetramer-validated 92 CD8+ and 50 CD4+ T cell epitopes, many inducing strong and prevalent (i.e., immunodominant) T cell responses. Restricted by 40 and 14 HLA-class I and II allotypes, respectively, these responses have wide population coverage and might be of considerable academic, diagnostic and therapeutic interest. The broad coverage of epitopes and HLA overcame the otherwise confounding effects of HLA diversity and non-HLA background providing the first evidence of T cell immunodomination in humans. Also, double-staining of CD4+ T cells with tetramers representing the same HLA-binding core, albeit with different flanking regions, demonstrated an extensive diversification of the specificities of many CD4+ T cell responses. We suggest that this could reduce the risk of pathogen escape, and that multi-tetramer staining is required to reveal the true magnitude and diversity of CD4+ T cell responses. Our T cell epitope discovery approach uses a combination of (1) overlapping peptides representing the entire Yellow Fever virus proteome to search for peptides containing CD4+ and/or CD8+ T cell epitopes, (2) predictors of peptide-HLA binding to suggest epitopes and their restricting HLA allotypes, (3) generation of peptide-HLA tetramers to identify T cell epitopes, and (4) analysis of ex vivo T cell responses to validate the same. This approach is systematic, exhaustive, and can be done in any individual of any HLA haplotype. It is all-inclusive in the sense that it includes all protein antigens and peptide epitopes, and encompasses both CD4+ and CD8+ T cell epitopes. It is efficient and, importantly, reduces the false discovery rate. The unbiased nature of the T cell epitope discovery approach presented here should support the refinement of future peptide-HLA class I and II predictors and tetramer technologies, which eventually should cover all HLA class I and II isotypes. We believe that future investigations of emerging pathogens (e.g., SARS-CoV-2) should include population-wide T cell epitope discovery using blood samples from patients, convalescents and/or long-term survivors, who might all hold important information on T cell epitopes and responses.
Collapse
Affiliation(s)
- Anette Stryhn
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Michael Kongsgaard
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Michael Rasmussen
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mikkel Nors Harndahl
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Thomas Østerbye
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Maria Rosaria Bassi
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Søren Thybo
- Department of Infectious Diseases, Copenhagen University Hospital, Copenhagen, Denmark
| | | | - Morten Bagge Hansen
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Morten Nielsen
- Department of Health Technology, The Technical University of Denmark, Lyngby, Denmark
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Jan Pravsgaard Christensen
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Allan Randrup Thomsen
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Soren Buus
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
12
|
Hill SC, de Souza R, Thézé J, Claro I, Aguiar RS, Abade L, Santos FCP, Cunha MS, Nogueira JS, Salles FCS, Rocco IM, Maeda AY, Vasami FGS, du Plessis L, Silveira PP, de Jesus JG, Quick J, Fernandes NCCA, Guerra JM, Réssio RA, Giovanetti M, Alcantara LCJ, Cirqueira CS, Díaz-Delgado J, Macedo FLL, Timenetsky MDCST, de Paula R, Spinola R, Telles de Deus J, Mucci LF, Tubaki RM, de Menezes RMT, Ramos PL, de Abreu AL, Cruz LN, Loman N, Dellicour S, Pybus OG, Sabino EC, Faria NR. Genomic Surveillance of Yellow Fever Virus Epizootic in São Paulo, Brazil, 2016 - 2018. PLoS Pathog 2020; 16:e1008699. [PMID: 32764827 PMCID: PMC7437926 DOI: 10.1371/journal.ppat.1008699] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 08/19/2020] [Accepted: 06/10/2020] [Indexed: 12/17/2022] Open
Abstract
São Paulo, a densely inhabited state in southeast Brazil that contains the fourth most populated city in the world, recently experienced its largest yellow fever virus (YFV) outbreak in decades. YFV does not normally circulate extensively in São Paulo, so most people were unvaccinated when the outbreak began. Surveillance in non-human primates (NHPs) is important for determining the magnitude and geographic extent of an epizootic, thereby helping to evaluate the risk of YFV spillover to humans. Data from infected NHPs can give more accurate insights into YFV spread than when using data from human cases alone. To contextualise human cases, identify epizootic foci and uncover the rate and direction of YFV spread in São Paulo, we generated and analysed virus genomic data and epizootic case data from NHPs in São Paulo. We report the occurrence of three spatiotemporally distinct phases of the outbreak in São Paulo prior to February 2018. We generated 51 new virus genomes from YFV positive cases identified in 23 different municipalities in São Paulo, mostly sampled from NHPs between October 2016 and January 2018. Although we observe substantial heterogeneity in lineage dispersal velocities between phylogenetic branches, continuous phylogeographic analyses of generated YFV genomes suggest that YFV lineages spread in São Paulo at a mean rate of approximately 1km per day during all phases of the outbreak. Viral lineages from the first epizootic phase in northern São Paulo subsequently dispersed towards the south of the state to cause the second and third epizootic phases there. This alters our understanding of how YFV was introduced into the densely populated south of São Paulo state. Our results shed light on the sylvatic transmission of YFV in highly fragmented forested regions in São Paulo state and highlight the importance of continued surveillance of zoonotic pathogens in sentinel species.
Collapse
Affiliation(s)
- Sarah C. Hill
- Department of Zoology, University of Oxford, Oxford, United Kingdom
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead, United Kingdom
| | | | - Julien Thézé
- Department of Zoology, University of Oxford, Oxford, United Kingdom
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR EPIA, Saint-Genès-Champanelle, France
| | - Ingra Claro
- Instituto de Medicina Tropical, Departamento de Moléstias Infecciosas e Parasitárias, Faculdade de Medicina e, Universidade de São Paulo, São Paulo, Brazil
| | - Renato S. Aguiar
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Rio de Janeiro, Brazil
| | - Leandro Abade
- Department of Zoology, University of Oxford, Oxford, United Kingdom
| | | | | | | | - Flavia C. S. Salles
- Instituto de Medicina Tropical, Departamento de Moléstias Infecciosas e Parasitárias, Faculdade de Medicina e, Universidade de São Paulo, São Paulo, Brazil
| | | | | | | | - Louis du Plessis
- Department of Zoology, University of Oxford, Oxford, United Kingdom
| | - Paola P. Silveira
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Rio de Janeiro, Brazil
| | - Jaqueline G. de Jesus
- Instituto de Medicina Tropical, Departamento de Moléstias Infecciosas e Parasitárias, Faculdade de Medicina e, Universidade de São Paulo, São Paulo, Brazil
| | - Joshua Quick
- Institute of Microbiology and Infection, University of Birmingham, Birmingham, United Kingdom
| | | | | | | | - Marta Giovanetti
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Luiz C. J. Alcantara
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | | | | | | | | | - Regiane de Paula
- Centro de Vigilância Epidemiológica "Prof. Alexandre Vranjac", São Paulo, Brazil
| | - Roberta Spinola
- Centro de Vigilância Epidemiológica "Prof. Alexandre Vranjac", São Paulo, Brazil
| | | | - Luís F. Mucci
- Superintendência do Controle de Endemias, São Paulo, Brazil
| | | | | | | | - Andre L. de Abreu
- Secretaria de Vigilância em Saúde, Ministério da Saúde (SVS/MS), Brasília-DF, Brazil
| | | | - Nick Loman
- Institute of Microbiology and Infection, University of Birmingham, Birmingham, United Kingdom
| | - Simon Dellicour
- Spatial Epidemiology Lab (SpELL), Université Libre de Bruxelles, CP160/12 50, Bruxelles, Belgium
- Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Oliver G. Pybus
- Department of Zoology, University of Oxford, Oxford, United Kingdom
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead, United Kingdom
| | - Ester C. Sabino
- Instituto de Medicina Tropical, Departamento de Moléstias Infecciosas e Parasitárias, Faculdade de Medicina e, Universidade de São Paulo, São Paulo, Brazil
| | - Nuno R. Faria
- Department of Zoology, University of Oxford, Oxford, United Kingdom
| |
Collapse
|
13
|
Low JG, Ng JHJ, Ong EZ, Kalimuddin S, Wijaya L, Chan YFZ, Ng DHL, Tan HC, Baglody A, Chionh YH, Lee DCP, Budigi Y, Sasisekharan R, Ooi EE. Phase 1 Trial of a Therapeutic Anti-Yellow Fever Virus Human Antibody. N Engl J Med 2020; 383:452-459. [PMID: 32726531 DOI: 10.1056/nejmoa2000226] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Insufficient vaccine doses and the lack of therapeutic agents for yellow fever put global health at risk, should this virus emerge from sub-Saharan Africa and South America. METHODS In phase 1a of this clinical trial, we assessed the safety, side-effect profile, and pharmacokinetics of TY014, a fully human IgG1 anti-yellow fever virus monoclonal antibody. In a double-blind, phase 1b clinical trial, we assessed the efficacy of TY014, as compared with placebo, in abrogating viremia related to the administration of live yellow fever vaccine (YF17D-204; Stamaril). The primary safety outcomes were adverse events reported 1 hour after the infusion and throughout the trial. The primary efficacy outcome was the dose of TY014 at which 100% of the participants tested negative for viremia within 48 hours after infusion. RESULTS A total of 27 healthy participants were enrolled in phase 1a, and 10 participants in phase 1b. During phase 1a, TY014 dose escalation to a maximum of 20 mg per kilogram of body weight occurred in 22 participants. During phases 1a and 1b, adverse events within 1 hour after infusion occurred in 1 of 27 participants who received TY014 and in none of the 10 participants who received placebo. At least one adverse event occurred during the trial in 22 participants who received TY014 and in 8 who received placebo. The mean half-life of TY014 was approximately 12.8 days. At 48 hours after the infusion, none of the 5 participants who received the starting dose of TY014 of 2 mg per kilogram had detectable YF17D-204 viremia; these participants remained aviremic throughout the trial. Viremia was observed at 48 hours after the infusion in 2 of 5 participants who received placebo and at 72 hours in 2 more placebo recipients. Symptoms associated with yellow fever vaccine were less frequent in the TY014 group than in the placebo group. CONCLUSIONS This phase 1 trial of TY014 did not identify worrisome safety signals and suggested potential clinical benefit, which requires further assessment in a phase 2 trial. (Funded by Tysana; ClinicalTrials.gov number, NCT03776786.).
Collapse
Affiliation(s)
- Jenny G Low
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Justin H J Ng
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Eugenia Z Ong
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Shirin Kalimuddin
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Limin Wijaya
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Yvonne F Z Chan
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Dorothy H L Ng
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Hwee-Cheng Tan
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Anjali Baglody
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Yok-Hian Chionh
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Debbie C P Lee
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Yadunanda Budigi
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Ram Sasisekharan
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| | - Eng-Eong Ooi
- From the Duke-National University of Singapore Medical School (J.G.L., E.Z.O., H.-C.T., E.-E.O.), Singapore General Hospital (J.G.L., S.K., L.W., Y.F.Z.C., D.H.L.N.), Tysana (J.H.J.N., A.B., Y.-H.C., D.C.P.L., Y.B.), and the Singapore-MIT (Massachusetts Institute of Technology) Alliance for Research and Technology (R.S., E.-E.O.) - all in Singapore; and the Massachusetts Institute of Technology, Cambridge (R.S.)
| |
Collapse
|
14
|
Abílio AP, Kampango A, Armando EJ, Gudo ES, das Neves LCB, Parreira R, Sidat M, Fafetine JM, de Almeida APG. First confirmed occurrence of the yellow fever virus and dengue virus vector Aedes (Stegomyia) luteocephalus (Newstead, 1907) in Mozambique. Parasit Vectors 2020; 13:350. [PMID: 33019944 PMCID: PMC7537105 DOI: 10.1186/s13071-020-04217-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/06/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Mozambique, same as many other tropical countries, is at high risk of arthropod-borne virus (arbovirus) diseases and recently two dengue virus (DENV) outbreaks occurred in the northern part of the country. The occurrence of some important vector species, such as Aedes (Stegomyia) aegypti (Linnaeus) and Ae. (Stg.) albopictus (Skuse), besides several other sylvatic vectors, have been reported in the country, which may indicate that the transmission of some arboviruses of public health importance may involve multiple-vector systems. Therefore, knowing the occurrence and distribution of existing and the new important vectors species, is crucial for devising systematic transmission surveillance and vector control approaches. The aim of this study was to map the occurrence and distribution of mosquito species with potential for transmitting arboviruses of human and veterinary relevance in Niassa Province, Northern Mozambique. METHODS Field entomological surveys were undertaken in April 2016 in Lago District, Niassa Province, northern Mozambique. Breeding sites of mosquitoes were inspected and immature stages were collected and reared into adult. Mosquitoes in the adult stages were morphologically identified using taxonomic keys. Morphological identification of Aedes (Stegomyia) luteocephalus (Newstead) were later confirmed using dissected male genitalia and molecular based on the phylogenetic analyses of the sequenced barcode (cox1 mtDNA) gene. RESULTS A total of 92 mosquito larvae collected developed into adults. Of these, 16 (17.39%) were morphologically identified as Ae. luteocephalus. The remaining specimens belonged to Ae. (Stg.) aegypti (n = 4, 4.35%), Ae. (Aedimorphus) vittatus (n = 24, 26.09%), Anopheles garnhami (n = 1, 1.09%), Culex (Culiciomyia) nebulosus (n = 28, 30.43%), Eretmapodites subsimplicipes (n = 18, 19.57%) and Toxorhynchites brevipalpis (n = 1, 1.09%), taxa already known to the country. Male genitalia and phylogenetic analyses confirmed the identity of Ae. luteocephalus specimens collected in this study. CONCLUSIONS To our knowledge, this is the first detection of Ae. luteocephalus in Mozambican territory, a vector species of yellow fever virus (YFV), Zika virus (ZIKV) and dengue virus (DENV) in Africa. Further studies are encouraged to investigate the role of Ae. luteocephalus in the transmission of arboviral diseases in Mozambique.
Collapse
Affiliation(s)
- Ana Paula Abílio
- Instituto Nacional de Saúde (INS), Maputo, Província de Maputo Mozambique
- Centro de Biotecnologia, Universidade Eduardo Mondlane (UEM), Maputo, Mozambique
| | - Ayubo Kampango
- Instituto Nacional de Saúde (INS), Maputo, Província de Maputo Mozambique
| | | | - Eduardo S. Gudo
- Instituto Nacional de Saúde (INS), Maputo, Província de Maputo Mozambique
| | - Luís C. B. das Neves
- Centro de Biotecnologia, Universidade Eduardo Mondlane (UEM), Maputo, Mozambique
- Department of Veterinary Tropical Diseases, University of Pretoria (UP), Pretoria, South Africa
| | - Ricardo Parreira
- GHTM, Institute of Hygiene and Tropical Medicine (IHMT), Universidade Nova de Lisboa, Lisboa, Portugal
| | - Mohsin Sidat
- Centro de Biotecnologia, Universidade Eduardo Mondlane (UEM), Maputo, Mozambique
- GHTM, Institute of Hygiene and Tropical Medicine (IHMT), Universidade Nova de Lisboa, Lisboa, Portugal
| | - José M. Fafetine
- Centro de Biotecnologia, Universidade Eduardo Mondlane (UEM), Maputo, Mozambique
- Department of Veterinary Tropical Diseases, University of Pretoria (UP), Pretoria, South Africa
| | | |
Collapse
|
15
|
Kareko BW, Booty BL, Nix CD, Lyski ZL, Slifka MK, Amanna IJ, Messer WB. Persistence of Neutralizing Antibody Responses Among Yellow Fever Virus 17D Vaccinees Living in a Nonendemic Setting. J Infect Dis 2020; 221:2018-2025. [PMID: 31545367 PMCID: PMC7289542 DOI: 10.1093/infdis/jiz374] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 08/13/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND The once-in-a-lifetime recommendation for vaccination against yellow fever virus (YFV) has been controversial, leading to increased scrutiny of the durability of immunity after 17D vaccination. METHODS This is a cross-sectional analysis of 17D vaccinees living in nonendemic Portland, Oregon. Neutralization assays were used to determine YFV immunity. The relationships between 17D immunity and vaccination history, demographics, and travel were evaluated using nominal logistic regression. RESULTS Seventy-one of 92 (77.2%) subjects were YFV seropositive (90 percent plaque reduction neutralization test ≥1:10) at all timepoints, and 24 of 38 (63.8%) were YFV seropositive at ≥10 years after single-dose vaccination. No relationship was found between YFV immunity and time in endemic countries, other flavivirus immunity, or demographics. Subjects were most likely to become seronegative between 3 and 12 years postvaccination (logistic regression, odds ratio [OR] = 1.75; 95% confidence interval [CI], 1.12-2.73). A comparison of our results and 4 previous studies of YFV nonendemic vaccinees found that overall, 79% (95% CI, 70%-86%) of vaccinees are likely to be seropositive ≥10 years postvaccination. CONCLUSIONS These results suggest that 1 in 5 17D vaccinees will lack neutralizing antibodies at ~10 years postvaccination, and a booster vaccination should be considered for nonendemic vaccinees before travel to regions where there is a high risk of YFV transmission.
Collapse
Affiliation(s)
- Bettie W Kareko
- Department of Molecular Microbiology and Immunology, Portland
| | - Brian L Booty
- Oregon Clinical and Translational Research Institute, Portland
| | - Chad D Nix
- Department of Infection Prevention and Control, Portland
| | - Zoe L Lyski
- Department of Molecular Microbiology and Immunology, Portland
| | - Mark K Slifka
- Department of Molecular Microbiology and Immunology, Portland
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton
| | | | - William B Messer
- Department of Molecular Microbiology and Immunology, Portland
- Division of Infectious Diseases, Department of Medicine, Oregon Health & Science University,, Portland
- OHSU-PSU School of Public Health, Oregon Health and Science University
| |
Collapse
|
16
|
Pereira BI, De Maeyer RPH, Covre LP, Nehar-Belaid D, Lanna A, Ward S, Marches R, Chambers ES, Gomes DCO, Riddell NE, Maini MK, Teixeira VH, Janes SM, Gilroy DW, Larbi A, Mabbott NA, Ucar D, Kuchel GA, Henson SM, Strid J, Lee JH, Banchereau J, Akbar AN. Sestrins induce natural killer function in senescent-like CD8 + T cells. Nat Immunol 2020; 21:684-694. [PMID: 32231301 PMCID: PMC10249464 DOI: 10.1038/s41590-020-0643-3] [Citation(s) in RCA: 128] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 02/26/2020] [Indexed: 12/29/2022]
Abstract
Aging is associated with remodeling of the immune system to enable the maintenance of life-long immunity. In the CD8+ T cell compartment, aging results in the expansion of highly differentiated cells that exhibit characteristics of cellular senescence. Here we found that CD27-CD28-CD8+ T cells lost the signaling activity of the T cell antigen receptor (TCR) and expressed a protein complex containing the agonistic natural killer (NK) receptor NKG2D and the NK adaptor molecule DAP12, which promoted cytotoxicity against cells that expressed NKG2D ligands. Immunoprecipitation and imaging cytometry indicated that the NKG2D-DAP12 complex was associated with sestrin 2. The genetic inhibition of sestrin 2 resulted in decreased expression of NKG2D and DAP12 and restored TCR signaling in senescent-like CD27-CD28-CD8+ T cells. Therefore, during aging, sestrins induce the reprogramming of non-proliferative senescent-like CD27-CD28-CD8+ T cells to acquire a broad-spectrum, innate-like killing activity.
Collapse
Affiliation(s)
- Branca I Pereira
- Division of Infection and Immunity, University College London, London, UK
| | - Roel P H De Maeyer
- Division of Infection and Immunity, University College London, London, UK
| | - Luciana P Covre
- Division of Infection and Immunity, University College London, London, UK
- Núcleo de Doenças Infecciosas, Universidade Federal do Espírito Santo, Vitória, Brazil
| | | | - Alessio Lanna
- Division of Infection and Immunity, University College London, London, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Sophie Ward
- Department of Medicine, Imperial College London, London, UK
| | - Radu Marches
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA
| | - Emma S Chambers
- Division of Infection and Immunity, University College London, London, UK
| | - Daniel C O Gomes
- Núcleo de Doenças Infecciosas, Universidade Federal do Espírito Santo, Vitória, Brazil
| | - Natalie E Riddell
- Division of Infection and Immunity, University College London, London, UK
- Faculty of Health & Medical Sciences, University of Surrey, Guildford, UK
| | - Mala K Maini
- Division of Infection and Immunity, University College London, London, UK
| | - Vitor H Teixeira
- Lungs for Living Research Centre, UCL Respiratory, University College London, London, UK
| | - Samuel M Janes
- Lungs for Living Research Centre, UCL Respiratory, University College London, London, UK
| | - Derek W Gilroy
- Division of Medicine, University College London, London, UK
| | - Anis Larbi
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Neil A Mabbott
- Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, UK
| | - Duygu Ucar
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA
| | - George A Kuchel
- University of Connecticut Center on Aging, University of Connecticut, Farmington, CT, USA
| | - Sian M Henson
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Jessica Strid
- Department of Medicine, Imperial College London, London, UK
| | - Jun H Lee
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | | | - Arne N Akbar
- Division of Infection and Immunity, University College London, London, UK.
| |
Collapse
|
17
|
Pollett S, Fauver JR, Berry IM, Melendrez M, Morrison A, Gillis LD, Johansson MA, Jarman RG, Grubaugh ND. Genomic Epidemiology as a Public Health Tool to Combat Mosquito-Borne Virus Outbreaks. J Infect Dis 2020; 221:S308-S318. [PMID: 31711190 PMCID: PMC11095994 DOI: 10.1093/infdis/jiz302] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Next-generation sequencing technologies, exponential increases in the availability of virus genomic data, and ongoing advances in phylogenomic methods have made genomic epidemiology an increasingly powerful tool for public health response to a range of mosquito-borne virus outbreaks. In this review, we offer a brief primer on the scope and methods of phylogenomic analyses that can answer key epidemiological questions during mosquito-borne virus public health emergencies. We then focus on case examples of outbreaks, including those caused by dengue, Zika, yellow fever, West Nile, and chikungunya viruses, to demonstrate the utility of genomic epidemiology to support the prevention and control of mosquito-borne virus threats. We extend these case studies with operational perspectives on how to best incorporate genomic epidemiology into structured surveillance and response programs for mosquito-borne virus control. Many tools for genomic epidemiology already exist, but so do technical and nontechnical challenges to advancing their use. Frameworks to support the rapid sharing of multidimensional data and increased cross-sector partnerships, networks, and collaborations can support advancement on all scales, from research and development to implementation by public health agencies.
Collapse
Affiliation(s)
- S. Pollett
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland
- Department of Preventive Medicine and Biostatistics, Uniformed Services University, Bethesda, Maryland
- Marie Bashir Institute, University of Sydney, Camperdown, New South Wales, Australia
| | - J. R. Fauver
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, New Haven, Connecticut
- Infectious Diseases Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Irina Maljkovic Berry
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | | | | | - L. D. Gillis
- Bureau of Public Health Laboratories–Miami, Florida Department of Health
| | - M. A. Johansson
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, San Juan, Puerto Rico
| | - R. G. Jarman
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - N. D. Grubaugh
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, New Haven, Connecticut
| |
Collapse
|
18
|
de Abreu FVS, Ferreira-de-Brito A, Azevedo ADS, Linhares JHR, de Oliveira Santos V, Hime Miranda E, Neves MSAS, Yousfi L, Ribeiro IP, dos Santos AAC, dos Santos E, dos Santos TP, Teixeira DS, Gomes MQ, Fernandes CB, da Silva AMV, Lima MDRQ, Paupy C, Romano APM, Ano Bom APD, de Oliveira-Pinto LM, Moutailler S, Motta MDA, Castro MG, Bonaldo MC, Maria Barbosa de Lima S, Lourenço-de-Oliveira R. Survey on Non-Human Primates and Mosquitoes Does not Provide Evidences of Spillover/Spillback between the Urban and Sylvatic Cycles of Yellow Fever and Zika Viruses Following Severe Outbreaks in Southeast Brazil. Viruses 2020; 12:E364. [PMID: 32224891 PMCID: PMC7232473 DOI: 10.3390/v12040364] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/10/2020] [Accepted: 02/16/2020] [Indexed: 12/14/2022] Open
Abstract
In the last decade, Flaviviruses such as yellow fever (YFV) and Zika (ZIKV) have expanded their transmission areas. These viruses originated in Africa, where they exhibit both sylvatic and interhuman transmission cycles. In Brazil, the risk of YFV urbanization has grown, with the sylvatic transmission approaching the most densely populated metropolis, while concern about ZIKV spillback to a sylvatic cycle has risen. To investigate these health threats, we carried out extensive collections and arbovirus screening of 144 free-living, non-human primates (NHPs) and 5219 mosquitoes before, during, and after ZIKV and YFV outbreaks (2015-2018) in southeast Brazil. ZIKV infection was not detected in any NHP collected at any time. In contrast, current and previous YFV infections were detected in NHPs sampled between 2017 and 2018, but not before the onset of the YFV outbreak. Mosquito pools screened by high-throughput PCR were positive for YFV when captured in the wild and during the YFV outbreak, but were negative for 94 other arboviruses, including ZIKV, regardless of the time of collection. In conclusion, there was no evidence of YFV transmission in coastal southeast Brazil before the current outbreak, nor the spread or establishment of an independent sylvatic cycle of ZIKV or urban Aedes aegypti transmission of YFV in the region. In view of the region's receptivity and vulnerability to arbovirus transmission, surveillance of NHPs and mosquitoes should be strengthened and continuous.
Collapse
Affiliation(s)
- Filipe Vieira Santos de Abreu
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (F.V.S.d.A.); (A.F.-d.-B.); (M.S.A.S.N.); (M.Q.G.); (M.d.A.M.); (M.G.C.)
- Instituto Federal do Norte de Minas Gerais, Salinas 39560-000, Brazil
| | - Anielly Ferreira-de-Brito
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (F.V.S.d.A.); (A.F.-d.-B.); (M.S.A.S.N.); (M.Q.G.); (M.d.A.M.); (M.G.C.)
| | - Adriana de Souza Azevedo
- Laboratório de Tecnologia Virológica, Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos, Rio de Janeiro 21040-900, Brazil; (A.d.S.A.); (J.H.R.L.); (V.d.O.S.); (E.H.M.); (S.M.B.d.L.)
| | - José Henrique Rezende Linhares
- Laboratório de Tecnologia Virológica, Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos, Rio de Janeiro 21040-900, Brazil; (A.d.S.A.); (J.H.R.L.); (V.d.O.S.); (E.H.M.); (S.M.B.d.L.)
| | - Vanessa de Oliveira Santos
- Laboratório de Tecnologia Virológica, Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos, Rio de Janeiro 21040-900, Brazil; (A.d.S.A.); (J.H.R.L.); (V.d.O.S.); (E.H.M.); (S.M.B.d.L.)
| | - Emily Hime Miranda
- Laboratório de Tecnologia Virológica, Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos, Rio de Janeiro 21040-900, Brazil; (A.d.S.A.); (J.H.R.L.); (V.d.O.S.); (E.H.M.); (S.M.B.d.L.)
| | - Maycon Sebastião Alberto Santos Neves
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (F.V.S.d.A.); (A.F.-d.-B.); (M.S.A.S.N.); (M.Q.G.); (M.d.A.M.); (M.G.C.)
| | - Lena Yousfi
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d’Alfort, Université Paris-Est, 94700 Maisons-Alfort, France; (L.Y.); (S.M.)
| | - Ieda Pereira Ribeiro
- Laboratório de Biologia Molecular de Flavivirus, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (I.P.R.); (A.A.C.d.S.); (M.C.B.)
| | - Alexandre Araújo Cunha dos Santos
- Laboratório de Biologia Molecular de Flavivirus, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (I.P.R.); (A.A.C.d.S.); (M.C.B.)
| | - Edmilson dos Santos
- Divisão de Vigilância Ambiental em Saúde, Secretaria de Saúde do Rio Grande do Sul, Porto Alegre 90610-000, Brazil;
| | - Taissa Pereira dos Santos
- MIVEGEC, CNRS, Institut de Recherche pour le Développement (IRD), Université de Montpellier, 34394 Montpellier, France; (T.P.d.S.); (C.P.)
| | - Danilo Simonini Teixeira
- Núcleo de Atendimento e Pesquisa de Animais Silvestres, Universidade Estadual de Santa Cruz, Ilhéus 45662-900, Brazil;
| | - Marcelo Quintela Gomes
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (F.V.S.d.A.); (A.F.-d.-B.); (M.S.A.S.N.); (M.Q.G.); (M.d.A.M.); (M.G.C.)
| | - Camilla Bayma Fernandes
- Laboratório de Tecnologia Imunológica, Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos, Rio de Janeiro 21040-900, Brazil; (C.B.F.); (A.M.V.d.S.); (A.P.D.A.B.)
| | - Andrea Marques Vieira da Silva
- Laboratório de Tecnologia Imunológica, Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos, Rio de Janeiro 21040-900, Brazil; (C.B.F.); (A.M.V.d.S.); (A.P.D.A.B.)
| | - Monique da Rocha Queiroz Lima
- Laboratório de Imunologia Viral, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (M.d.R.Q.L.); (L.M.d.O.-P.)
| | - Christophe Paupy
- MIVEGEC, CNRS, Institut de Recherche pour le Développement (IRD), Université de Montpellier, 34394 Montpellier, France; (T.P.d.S.); (C.P.)
| | | | - Ana Paula Dinis Ano Bom
- Laboratório de Tecnologia Imunológica, Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos, Rio de Janeiro 21040-900, Brazil; (C.B.F.); (A.M.V.d.S.); (A.P.D.A.B.)
| | - Luzia Maria de Oliveira-Pinto
- Laboratório de Imunologia Viral, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (M.d.R.Q.L.); (L.M.d.O.-P.)
| | - Sara Moutailler
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d’Alfort, Université Paris-Est, 94700 Maisons-Alfort, France; (L.Y.); (S.M.)
| | - Monique de Albuquerque Motta
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (F.V.S.d.A.); (A.F.-d.-B.); (M.S.A.S.N.); (M.Q.G.); (M.d.A.M.); (M.G.C.)
| | - Márcia Gonçalves Castro
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (F.V.S.d.A.); (A.F.-d.-B.); (M.S.A.S.N.); (M.Q.G.); (M.d.A.M.); (M.G.C.)
| | - Myrna Cristina Bonaldo
- Laboratório de Biologia Molecular de Flavivirus, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (I.P.R.); (A.A.C.d.S.); (M.C.B.)
| | - Sheila Maria Barbosa de Lima
- Laboratório de Tecnologia Virológica, Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos, Rio de Janeiro 21040-900, Brazil; (A.d.S.A.); (J.H.R.L.); (V.d.O.S.); (E.H.M.); (S.M.B.d.L.)
| | - Ricardo Lourenço-de-Oliveira
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (F.V.S.d.A.); (A.F.-d.-B.); (M.S.A.S.N.); (M.Q.G.); (M.d.A.M.); (M.G.C.)
| |
Collapse
|
19
|
Wec AZ, Haslwanter D, Abdiche YN, Shehata L, Pedreño-Lopez N, Moyer CL, Bornholdt ZA, Lilov A, Nett JH, Jangra RK, Brown M, Watkins DI, Ahlm C, Forsell MN, Rey FA, Barba-Spaeth G, Chandran K, Walker LM. Longitudinal dynamics of the human B cell response to the yellow fever 17D vaccine. Proc Natl Acad Sci U S A 2020; 117:6675-6685. [PMID: 32152119 PMCID: PMC7104296 DOI: 10.1073/pnas.1921388117] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
A comprehensive understanding of the development and evolution of human B cell responses induced by pathogen exposure will facilitate the design of next-generation vaccines. Here, we utilized a high-throughput single B cell cloning technology to longitudinally track the human B cell response to the yellow fever virus 17D (YFV-17D) vaccine. The early memory B cell (MBC) response was mediated by both classical immunoglobulin M (IgM) (IgM+CD27+) and switched immunoglobulin (swIg+) MBC populations; however, classical IgM MBCs waned rapidly, whereas swIg+ and atypical IgM+ and IgD+ MBCs were stable over time. Affinity maturation continued for 6 to 9 mo following vaccination, providing evidence for the persistence of germinal center activity long after the period of active viral replication in peripheral blood. Finally, a substantial fraction of the neutralizing antibody response was mediated by public clones that recognize a fusion loop-proximal antigenic site within domain II of the viral envelope glycoprotein. Overall, our findings provide a framework for understanding the dynamics and complexity of human B cell responses elicited by infection and vaccination.
Collapse
Affiliation(s)
| | - Denise Haslwanter
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461
| | | | | | | | | | | | | | | | - Rohit K Jangra
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461
| | | | - David I Watkins
- Department of Pathology, University of Miami, Miami, FL 33146
| | - Clas Ahlm
- Division of Infection & Immunology, Department of Clinical Microbiology, Umeå University, 90187 Umeå, Sweden
| | - Mattias N Forsell
- Division of Infection & Immunology, Department of Clinical Microbiology, Umeå University, 90187 Umeå, Sweden
| | - Félix A Rey
- Structural Virology Unit, CNRS UMR 3569, Virology Department, Institut Pasteur, 75015 Paris, France
| | - Giovanna Barba-Spaeth
- Structural Virology Unit, CNRS UMR 3569, Virology Department, Institut Pasteur, 75015 Paris, France
| | - Kartik Chandran
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461
| | | |
Collapse
|
20
|
Ajogbasile FV, Oguzie JU, Oluniyi PE, Eromon PE, Uwanibe JN, Mehta SB, Siddle KJ, Odia I, Winnicki SM, Akpede N, Akpede G, Okogbenin S, Ogbaini-Emovon E, MacInnis BL, Folarin OA, Modjarrad K, Schaffner SF, Tomori O, Ihekweazu C, Sabeti PC, Happi CT. Real-time Metagenomic Analysis of Undiagnosed Fever Cases Unveils a Yellow Fever Outbreak in Edo State, Nigeria. Sci Rep 2020; 10:3180. [PMID: 32081931 PMCID: PMC7035389 DOI: 10.1038/s41598-020-59880-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 02/03/2020] [Indexed: 01/21/2023] Open
Abstract
Fifty patients with unexplained fever and poor outcomes presented at Irrua Specialist Teaching Hospital (ISTH) in Edo State, Nigeria, an area endemic for Lassa fever, between September 2018 - January 2019. After ruling out Lassa fever, plasma samples from these epidemiologically-linked cases were sent to the African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun State, Nigeria, where we carried out metagenomic sequencing which implicated yellow fever virus (YFV) as the etiology of this outbreak. Twenty-nine of the 50 samples were confirmed positive for YFV by reverse transcriptase-quantitative polymerase chain reaction (RT-qPCR), 14 of which resulted in genome assembly. Maximum likelihood phylogenetic analysis revealed that these YFV sequences formed a tightly clustered clade more closely related to sequences from Senegal than sequences from earlier Nigerian isolates, suggesting that the YFV clade responsible for this outbreak in Edo State does not descend directly from the Nigerian YFV outbreaks of the last century, but instead reflects a broader diversity and dynamics of YFV in West Africa. Here we demonstrate the power of metagenomic sequencing for identifying ongoing outbreaks and their etiologies and informing real-time public health responses, resulting in accurate and prompt disease management and control.
Collapse
Affiliation(s)
- Fehintola V Ajogbasile
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun State, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun State, Nigeria
| | - Judith U Oguzie
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun State, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun State, Nigeria
| | - Paul E Oluniyi
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun State, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun State, Nigeria
| | - Philomena E Eromon
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun State, Nigeria
| | - Jessica N Uwanibe
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun State, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun State, Nigeria
| | - Samar B Mehta
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Beth Israel Deaconess Medical Center, Division of Infectious Diseases, Boston, Massachusetts, USA
| | - Katherine J Siddle
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Center for Systems Biology, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, USA
| | - Ikponmwosa Odia
- Institute of Lassa Fever Research and Control, Irrua Specialist Teaching Hospital, Irrua, Edo State, Nigeria
| | - Sarah M Winnicki
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Nosa Akpede
- Institute of Lassa Fever Research and Control, Irrua Specialist Teaching Hospital, Irrua, Edo State, Nigeria
| | - George Akpede
- Institute of Lassa Fever Research and Control, Irrua Specialist Teaching Hospital, Irrua, Edo State, Nigeria
| | - Sylvanus Okogbenin
- Institute of Lassa Fever Research and Control, Irrua Specialist Teaching Hospital, Irrua, Edo State, Nigeria
| | - Ephraim Ogbaini-Emovon
- Institute of Lassa Fever Research and Control, Irrua Specialist Teaching Hospital, Irrua, Edo State, Nigeria
| | - Bronwyn L MacInnis
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, USA
| | - Onikepe A Folarin
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun State, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun State, Nigeria
| | - Kayvon Modjarrad
- Emerging Infectious Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | - Stephen F Schaffner
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Center for Systems Biology, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, USA
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, USA
| | - Oyewale Tomori
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun State, Nigeria
| | | | - Pardis C Sabeti
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Center for Systems Biology, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, USA
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, USA
- Howard Hughes Medical Institute, Chevy Chase, Maryland, USA
| | - Christian T Happi
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun State, Nigeria.
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun State, Nigeria.
- Institute of Lassa Fever Research and Control, Irrua Specialist Teaching Hospital, Irrua, Edo State, Nigeria.
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, USA.
| |
Collapse
|
21
|
Abstract
This article explores the entangled histories of dengue and yellow fever. It traces how historical conflations of these diseases deepened at the start of the twentieth century in the context of rising fears that yellow fever might spread to Asia. Advances in biomedicine, I suggest, reinforced notions of their kinship and generated competing theories that dengue either foreshadowed yellow fever in Asia or inoculated the region against it. This history in which the language and science of dengue and yellow fever shadowed one another offers a nonlinear narrative of scientific progress. Furthermore, as the so-called neglected tropical diseases resurge in the present, it elucidates how disease threats are read against one another. Thus, the article offers a historical context to ongoing discussions on disease emergence and pandemic preparedness.
Collapse
|
22
|
Carey JM, Chi V, Flynn DJ, Nyhan B, Zeitzoff T. The effects of corrective information about disease epidemics and outbreaks: Evidence from Zika and yellow fever in Brazil. Sci Adv 2020; 6:eaaw7449. [PMID: 32064329 PMCID: PMC6989147 DOI: 10.1126/sciadv.aaw7449] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 11/20/2019] [Indexed: 05/03/2023]
Abstract
Disease epidemics and outbreaks often generate conspiracy theories and misperceptions that mislead people about the risks they face and how best to protect themselves. We investigate the effectiveness of interventions aimed at combating false and unsupported information about the Zika epidemic and subsequent yellow fever outbreak in Brazil. Results from a nationally representative survey show that conspiracy theories and other misperceptions about Zika are widely believed. Moreover, results from three preregistered survey experiments suggest that efforts to counter misperceptions about diseases during epidemics and outbreaks may not always be effective. We find that corrective information not only fails to reduce targeted Zika misperceptions but also reduces the accuracy of other beliefs about the disease. In addition, although corrective information about the better-known threat from yellow fever was more effective, none of these corrections affected support for vector control policies or intentions to engage in preventive behavior.
Collapse
Affiliation(s)
- John M. Carey
- Department of Government, Dartmouth College, Hanover, NH, USA
| | - Victoria Chi
- School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - D. J. Flynn
- School of International Relations, IE University, Segovia, Spain
| | - Brendan Nyhan
- Department of Government, Dartmouth College, Hanover, NH, USA
- Corresponding author.
| | - Thomas Zeitzoff
- School of Public Affairs, American University, Washington, DC, USA
| |
Collapse
|
23
|
Marinho PES, Alvarenga PPM, Crispim APC, Candiani TMS, Alvarenga AM, Bechler IM, Alves PA, Dornas FP, de Oliveira DB, Bentes AA, Christo PP, Kroon EG. Wild-Type Yellow Fever Virus RNA in Cerebrospinal Fluid of Child. Emerg Infect Dis 2019; 25:1567-1570. [PMID: 31310221 PMCID: PMC6649336 DOI: 10.3201/eid2508.181479] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
We report a 3-year-old child who was hospitalized because of severe manifestations of the central nervous system. The child died after 6 days of hospitalization. Analysis of postmortem cerebrospinal fluid showed the presence of yellow fever virus RNA. Nucleotide sequencing confirmed that the virus was wild-type yellow fever virus.
Collapse
|
24
|
Guindo-Coulibaly N, Adja AM, Coulibaly JT, Kpan MDS, Adou KA, Zoh DD. Expansion of Aedes africanus (Diptera: Culicidae), a sylvatic vector of arboviruses, into an urban environment of Abidjan, Côte d'Ivoire. J Vector Ecol 2019; 44:248-255. [PMID: 31729805 DOI: 10.1111/jvec.12356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 06/09/2019] [Indexed: 06/10/2023]
Abstract
In 2008, an outbreak of yellow fever occurred in Abidjan. The entomological investigations confirm that Abidjan is at risk of yellow fever with a suspicion of the National Park of Banco (NPB) forest as a likely area of re-emergence. This study aims to assess the dispersion of sylvatic vectors of arboviruses from the NPB forest to the surrounding areas (Andokoi and Sagbé). The sampling was done in the rainy season using the WHO layer-traps technique. Among the six species of Aedes sampled, Aedes aegypti and Aedes africanus were the potential vectors of arboviruses. Both species were collected in Sagbé but only Ae. aegypti in Andokoi. Only Ae. aegypti were present 400 and 800 m from NPB forest, but at 200 m, it showed respective proportions of 75.5% and 87.5% in Sagbé and Andokoi. In the NPB forest, however, Ae. africanus has been the predominant species. The study showed the presence of Ae. aegypti in Andokoi and Sagbé. However, Ae. africanus was found in the NPB forest and in the 200 m radius in Sagbé. The establishment of an entomological surveillance program in all areas would therefore be essential for the prevention of arboviruses outbreaks in Abidjan.
Collapse
Affiliation(s)
- N Guindo-Coulibaly
- Unité de Formation et de Recherches Biosciences, Université Félix Houphouët-Boigny (UFHB), 22 BP 582 Abidjan 22, Côte d'Ivoire
| | - A M Adja
- Unité de Formation et de Recherches Biosciences, Université Félix Houphouët-Boigny (UFHB), 22 BP 582 Abidjan 22, Côte d'Ivoire
- Institut Pierre Richet (IPR), Institut National de Santé Publique (INSP), 01 BP 1500, Bouaké 01, Côte d'Ivoire
| | - J T Coulibaly
- Unité de Formation et de Recherches Biosciences, Université Félix Houphouët-Boigny (UFHB), 22 BP 582 Abidjan 22, Côte d'Ivoire
- Département Environnement et Santé, Centre Suisse de Recherches Scientifiques, 01 BP 1303 Abidjan 01, Côte d'Ivoire
| | - M D S Kpan
- Unité de Formation et de Recherches Biosciences, Université Félix Houphouët-Boigny (UFHB), 22 BP 582 Abidjan 22, Côte d'Ivoire
- Institut Pierre Richet (IPR), Institut National de Santé Publique (INSP), 01 BP 1500, Bouaké 01, Côte d'Ivoire
| | - K A Adou
- Institut Pierre Richet (IPR), Institut National de Santé Publique (INSP), 01 BP 1500, Bouaké 01, Côte d'Ivoire
- Institut de Géographie Tropicale, Unité de Formation et de Recherches des Sciences de l'Homme et de la Société, UFHB
| | - D D Zoh
- Unité de Formation et de Recherches Biosciences, Université Félix Houphouët-Boigny (UFHB), 22 BP 582 Abidjan 22, Côte d'Ivoire
- Institut Pierre Richet (IPR), Institut National de Santé Publique (INSP), 01 BP 1500, Bouaké 01, Côte d'Ivoire
| |
Collapse
|
25
|
Goh GKM, Dunker AK, Foster JA, Uversky VN. Zika and Flavivirus Shell Disorder: Virulence and Fetal Morbidity. Biomolecules 2019; 9:biom9110710. [PMID: 31698857 PMCID: PMC6920988 DOI: 10.3390/biom9110710] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 10/29/2019] [Accepted: 11/04/2019] [Indexed: 12/12/2022] Open
Abstract
Zika virus (ZIKV) was first discovered in 1947 in Africa. Since then, sporadic ZIKV infections of humans have been reported in Africa and Asia. For a long time, this virus was mostly unnoticed due to its mild symptoms and low fatality rates. However, during the 2015-2016 epidemic in Central and South America, when millions of people were infected, it was discovered that ZIKV causes microcephaly in the babies of mothers infected during pregnancy. An examination of the M and C proteins of the ZIKV shell using the disorder predictor PONDR VLXT revealed that the M protein contains relatively high disorder levels comparable only to those of the yellow fever virus (YFV). On the other hand, the disorder levels in the C protein are relatively low, which can account for the low case fatality rate (CFR) of this virus in contrast to the more virulent YFV, which is characterized by high disorder in its C protein. A larger variation was found in the percentage of intrinsic disorder (PID) in the C protein of various ZIKV strains. Strains of African lineage are characterized by higher PIDs. Using both in vivo and in vitro experiments, laboratories have also previously shown that strains of African origin have a greater potential to inflict higher fetal morbidity than do strains of Asian lineage, with dengue-2 virus (DENV-2) having the least potential. Strong correlations were found between the potential to inflict fetal morbidity and shell disorder in ZIKV (r2 = 0.9) and DENV-2 (DENV-2 + ZIKV, r2 = 0.8). A strong correlation between CFR and PID was also observed when ZIKV was included in an analysis of sets of shell proteins from a variety of flaviviruses (r2 = 0.8). These observations have potential implications for antiviral vaccine development and for the design of cancer therapeutics in terms of developing therapeutic viruses that penetrate hard-to-reach organs.
Collapse
Affiliation(s)
- Gerard Kian-Meng Goh
- Goh’s BioComputing, Singapore 548957, Singapore
- Correspondence: ; Tel.: +65-8648-5440
| | - A. Keith Dunker
- Center for Computational Biology, Indiana and Bioinformatics, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
| | - James A. Foster
- Department of Biological Sciences, University of Idaho, Moscow, ID 83844, USA;
- Institute for Bioinformatics and Evolutionary Studies, University of Idaho, Moscow, ID 83844, USA
| | - Vladimir N. Uversky
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA;
- Institute for Biological Instrumentation, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
| |
Collapse
|
26
|
Dietz JM, Hankerson SJ, Alexandre BR, Henry MD, Martins AF, Ferraz LP, Ruiz-Miranda CR. Yellow fever in Brazil threatens successful recovery of endangered golden lion tamarins. Sci Rep 2019; 9:12926. [PMID: 31506447 PMCID: PMC6736970 DOI: 10.1038/s41598-019-49199-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 08/21/2019] [Indexed: 12/03/2022] Open
Abstract
The golden lion tamarin is an endangered primate endemic to Brazil's Atlantic Forest. Centuries of deforestation reduced numbers to a few hundred individuals in isolated forest fragments 80 km from Rio de Janeiro city. Intensive conservation action including reintroduction of zoo-born tamarins into forest fragments 1984-2000, increased numbers to about 3,700 in 2014. Beginning in November 2016, southeastern Brazil experienced the most severe yellow fever epidemic/epizootic in the country in 80 years. In May 2018, we documented the first death of a golden lion tamarin due to yellow fever. We re-evaluated population sizes and compared them to results of a census completed in 2014. Tamarin numbers declined 32%, with ca. 2,516 individuals remaining in situ. Tamarin losses were significantly greater in forest fragments that were larger, had less forest edge and had better forest connectivity, factors that may favor the mosquito vectors of yellow fever. The future of golden lion tamarins depends on the extent of additional mortality, whether some tamarins survive the disease and acquire immunity, and the potential development of a vaccine to protect the species against yellow fever.
Collapse
Affiliation(s)
- James M Dietz
- Save the Golden Lion Tamarin, Silver Spring, Maryland, 22842, USA.
- Associação Mico-Leão-Dourado, Casimiro de Abreu, CP 109968, CEP 28860-970, Rio de Janeiro, Brazil.
| | - Sarah J Hankerson
- Department of Psychology, University of St. Thomas, St. Paul, Minnesota, 55403, USA
| | - Brenda Rocha Alexandre
- Instituto de Geociências, Universidade Federal Fluminense, Campus Praia Vermelha, Niterói, Rio de Janeiro, CEP 24210-240, Brazil
| | - Malinda D Henry
- Associação Mico-Leão-Dourado, Casimiro de Abreu, CP 109968, CEP 28860-970, Rio de Janeiro, Brazil
- Instituto de Biodiversidade e Sustentabilidade (NUPEM/UFRJ), Universidade Federal do Rio de Janeiro, Avenida São José do Barreto 764, São José do Barreto, Macaé, CEP 27965-045, Rio de Janeiro, Brazil
| | - Andréia F Martins
- Associação Mico-Leão-Dourado, Casimiro de Abreu, CP 109968, CEP 28860-970, Rio de Janeiro, Brazil
| | - Luís Paulo Ferraz
- Associação Mico-Leão-Dourado, Casimiro de Abreu, CP 109968, CEP 28860-970, Rio de Janeiro, Brazil
| | - Carlos R Ruiz-Miranda
- Associação Mico-Leão-Dourado, Casimiro de Abreu, CP 109968, CEP 28860-970, Rio de Janeiro, Brazil
- Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, CEP 28013-602, Rio de Janeiro, Brazil
| |
Collapse
|
27
|
Moore JR, Ahmed H, McGuire D, Akondy R, Ahmed R, Antia R. Dependence of CD8 T Cell Response upon Antigen Load During Primary Infection : Analysis of Data from Yellow Fever Vaccination. Bull Math Biol 2019; 81:2553-2568. [PMID: 31165405 PMCID: PMC6657775 DOI: 10.1007/s11538-019-00618-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 05/24/2019] [Indexed: 02/07/2023]
Abstract
A major question in immunology is what role antigen load plays in determining the size of the CD8 immune response. Is the amount of antigen important during recruitment, proliferation, and/or memory formation? Animal studies have shown that antigen is only strictly required early during activation of T cells, but the importance of antigen at later timepoints is unclear. Using data from 24 volunteers infected with the yellow fever vaccine virus (YFV), we analyzed the dependence of T cell proliferation upon viral load. We found that volunteers with high viral load initially have greater T cell responses, but by 28 days post-vaccination those with lower viral load are able to 'catch-up.' Using differential equation modeling we show that this pattern is consistent with viral load only affecting recruitment (i.e., programmed proliferation) as opposed to affecting recruitment and proliferation (i.e., antigen-dependent proliferation). A quantitative understanding of the dependence of T cell dynamics on antigen load will be of use to modelers studying not only vaccination, but also cancer immunology and autoimmune disorders.
Collapse
Affiliation(s)
- James R Moore
- Division of Vaccines and Infectious Diseases, Fred Hutchinson Cancer Research Center, Seattle, USA.
| | - Hasan Ahmed
- Department of Biology, Emory University, Atlanta, USA
| | - Don McGuire
- Emory Vaccine Center, Emory University, Atlanta, USA
| | - Rama Akondy
- Department of Microbiology and Immunobiology, Emory University, Atlanta, USA
| | - Rafi Ahmed
- Emory Vaccine Center, Emory University, Atlanta, USA
| | - Rustom Antia
- Department of Biology, Emory University, Atlanta, USA
| |
Collapse
|
28
|
Abstract
In 2018, yellow fever with hepatitis was diagnosed for 2 unvaccinated travelers returning to France from Brazil. Hepatitis persisted for >6 months; liver enzyme levels again increased 2 months after disease onset with no detection of yellow fever virus RNA or other pathogens. Persistent hepatitis with hepatic cytolysis rebound probably resulted from immune response.
Collapse
|
29
|
Martin E, Medeiros MCI, Carbajal E, Valdez E, Juarez JG, Garcia-Luna S, Salazar A, Qualls WA, Hinojosa S, Borucki MK, Manley HA, Badillo-Vargas IE, Frank M, Hamer GL. Surveillance of Aedes aegypti indoors and outdoors using Autocidal Gravid Ovitraps in South Texas during local transmission of Zika virus, 2016 to 2018. Acta Trop 2019; 192:129-137. [PMID: 30763563 DOI: 10.1016/j.actatropica.2019.02.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 02/07/2019] [Accepted: 02/09/2019] [Indexed: 12/20/2022]
Abstract
The yellow fever mosquito, Aedes aegypti, has facilitated the re-emergence of dengue virus (DENV) and emergence of chikungunya virus (CHIKV) and Zika virus (ZIKV) in the Americas and the Caribbean. The recent transmission of these arboviruses in the continental United States has been limited, to date, to South Florida and South Texas despite Ae. aegypti occurring over a much larger geographical region within the country. The main goal of our study was to provide the first long term longitudinal study of Ae. aegypti and enhance the knowledge about the indoor and outdoor relative abundance of Ae. aegypti as a proxy for mosquito-human contact in South Texas, a region of the United States that is at high risk for mosquito-borne virus transmission. Here, the relative abundance of indoors and outdoors mosquitoes of households in eight different communities was described. Surveillance was done weekly from September 2016 to April 2018 using the CDC Autocidal Gravid Ovitraps in low- and middle-income communities. A total of 69 houses were included in this survey among which 36 were in the low-income communities (n = 11 for Donna, n = 15 for Progresso, n = 5 for Mesquite, n = 5 for Chapa) and 33 in middle-income communities (n = 9 for La Feria, n = 8 for Weslaco, n = 11 for McAllen, and n = 5 for Rio Rico). Overall, Ae. aegypti was the dominant species (59.2% of collections, n = 7255) followed by Culex spp. mosquitoes (27.3% of collections, n = 3350). Furthermore, we demonstrated for Ae. aegypti that 1) outdoor relative abundance was higher compared to indoor relative abundance, 2) low-income communities were associated with an increase in mosquito relative abundance indoors when compared to middle-income communities, 3) no difference was observed in the number of mosquitoes collected outdoors between low-income and middle-income communities, and 4) warmer months were positively correlated with outdoor relative abundance whereas no seasonality was observed in the relative abundance of mosquitoes indoors. Additionally, Ae. aegypti mosquitoes collected in South Texas were tested using a specific ZIKV/CHIKV multiplex real-time PCR assay, however, none of the mosquitoes tested positive. Our data highlights the occurrence of mosquitoes indoors in the continental United States and that adults are collected nearly every week of the calendar year. These mosquito data, obtained concurrently with local ZIKV transmission of 10 locally acquired cases in nearby communities, represent a baseline for future studies in the Lower Rio Grande Valley (LRGV) including vector control interventions relying on the oviposition behavior to reduce mosquito populations and pathogen transmission.
Collapse
Affiliation(s)
- Estelle Martin
- Department of Entomology, Texas A&M University, College Station, TX, United States.
| | - Matthew C I Medeiros
- Pacific Biosciences Research Center, University of Hawaii at Mānoa, Honolulu, HI, United States
| | - Ester Carbajal
- Department of Entomology, Texas A&M University, College Station, TX, United States
| | - Edwin Valdez
- Department of Entomology, Texas A&M University, College Station, TX, United States
| | - Jose G Juarez
- Department of Entomology, Texas A&M University, College Station, TX, United States
| | - Selene Garcia-Luna
- Department of Entomology, Texas A&M University, College Station, TX, United States
| | - Aaron Salazar
- City of McAllen, Health & Code Compliance Department, McAllen, TX, United States
| | - Whitney A Qualls
- Zoonosis Control Branch Texas Department of State Health Services, Austin, TX, United States
| | - Steven Hinojosa
- Hidalgo County Health and Human Services, Edinburg, TX, United States
| | - Monica K Borucki
- Lawrence Livermore National Laboratory, Livermore, CA, United States
| | - Heather A Manley
- Institute for Infectious Animal Diseases, Texas A&M University, College Station, United States
| | | | - Matthias Frank
- Lawrence Livermore National Laboratory, Livermore, CA, United States
| | - Gabriel L Hamer
- Department of Entomology, Texas A&M University, College Station, TX, United States.
| |
Collapse
|
30
|
de Freitas CS, Higa LM, Sacramento CQ, Ferreira AC, Reis PA, Delvecchio R, Monteiro FL, Barbosa-Lima G, James Westgarth H, Vieira YR, Mattos M, Rocha N, Hoelz LVB, Leme RPP, Bastos MM, L. Rodrigues GO, M. Lopes CE, Queiroz-Junior CM, Lima CX, Costa VV, Teixeira MM, Bozza FA, Bozza PT, Boechat N, Tanuri A, Souza TML. Yellow fever virus is susceptible to sofosbuvir both in vitro and in vivo. PLoS Negl Trop Dis 2019; 13:e0007072. [PMID: 30699122 PMCID: PMC6375661 DOI: 10.1371/journal.pntd.0007072] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 02/14/2019] [Accepted: 12/12/2018] [Indexed: 02/05/2023] Open
Abstract
Yellow fever virus (YFV) is a member of the Flaviviridae family. In Brazil, yellow fever (YF) cases have increased dramatically in sylvatic areas neighboring urban zones in the last few years. Because of the high lethality rates associated with infection and absence of any antiviral treatments, it is essential to identify therapeutic options to respond to YFV outbreaks. Repurposing of clinically approved drugs represents the fastest alternative to discover antivirals for public health emergencies. Other Flaviviruses, such as Zika (ZIKV) and dengue (DENV) viruses, are susceptible to sofosbuvir, a clinically approved drug against hepatitis C virus (HCV). Our data showed that sofosbuvir docks onto YFV RNA polymerase using conserved amino acid residues for nucleotide binding. This drug inhibited the replication of both vaccine and wild-type strains of YFV on human hepatoma cells, with EC50 values around 5 μM. Sofosbuvir protected YFV-infected neonatal Swiss mice and adult type I interferon receptor knockout mice (A129-/-) from mortality and weight loss. Because of its safety profile in humans and significant antiviral effects in vitro and in mice, Sofosbuvir may represent a novel therapeutic option for the treatment of YF. Key-words: Yellow fever virus; Yellow fever, antiviral; sofosbuvir Yellow fever virus is transmitted by mosquitoes and its infection may be asymptomatic or lead to a wide clinical spectrum ranging from a mild febrile illness to a potentially lethal viral hemorrhagic fever characterized by liver damage. Although a yellow fever vaccine is available, low coverage allows 80,000–200,000 cases and 30,000–60,000 deaths annually worldwide. There are no specific therapy and treatment relies on supportive care, reinforcing an urgent need for antiviral repourposing. Here, we showed that sofosbuvir, clinically approved against hepatitis C, inhibits yellow fever virus replication in liver cell lines and animal models. In vitro, sofosbuvir inhibits viral RNA replication, decreases the number of infected cells and the production of infectious virus particles. These data is particularly relevante since the liver is the main target of yellow fever infection. Sofosbuvir also protected infected animals from mortality, weight loss and liver injury, especially prophylatically. Our pre-clinical results supports a second use of sofosbuvir against yellow fever.
Collapse
Affiliation(s)
- Caroline S. de Freitas
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Luiza M. Higa
- Laboratório de Virologia Molecular, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Carolina Q. Sacramento
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - André C. Ferreira
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Patrícia A. Reis
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Rodrigo Delvecchio
- Laboratório de Virologia Molecular, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Fabio L. Monteiro
- Laboratório de Virologia Molecular, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | | | - Harrison James Westgarth
- Laboratório de Virologia Molecular, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Yasmine Rangel Vieira
- National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
- Instituto Nacional de Infectologia (INI), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Mayara Mattos
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Natasha Rocha
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | | | | | - Mônica M. Bastos
- Instituto de Tecnologia de Fármacos (Farmanguinhos), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Gisele Olinto L. Rodrigues
- Center for Research and Development of Pharmaceuticals, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Minas Gerais, Brazil
- Research Group in Arboviral Diseases, Department of Morphology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Minas Gerais, Brazil
| | - Carla Elizabeth M. Lopes
- Center for Research and Development of Pharmaceuticals, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Minas Gerais, Brazil
- Research Group in Arboviral Diseases, Department of Morphology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Minas Gerais, Brazil
| | - Celso Martins Queiroz-Junior
- Cardiac Lab, Department of Morphology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Minas Gerais, Brazil
| | - Cristiano X. Lima
- Departamento de Cirurgia, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Vivian V. Costa
- Center for Research and Development of Pharmaceuticals, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Minas Gerais, Brazil
- Research Group in Arboviral Diseases, Department of Morphology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Minas Gerais, Brazil
| | - Mauro M. Teixeira
- Center for Research and Development of Pharmaceuticals, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Minas Gerais, Brazil
- Immunopharmacology Lab, Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Minas Gerais, Brazil
| | - Fernando A. Bozza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- Instituto Nacional de Infectologia (INI), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Patrícia T. Bozza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Nubia Boechat
- Instituto de Tecnologia de Fármacos (Farmanguinhos), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Amilcar Tanuri
- Laboratório de Virologia Molecular, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Thiago Moreno L. Souza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
- Instituto Nacional de Infectologia (INI), Fiocruz, Rio de Janeiro, RJ, Brazil
- * E-mail:
| |
Collapse
|
31
|
Manica M, Guzzetta G, Filipponi F, Solimini A, Caputo B, Della Torre A, Rosà R, Merler S. Assessing the risk of autochthonous yellow fever transmission in Lazio, central Italy. PLoS Negl Trop Dis 2019; 13:e0006970. [PMID: 30629583 PMCID: PMC6328239 DOI: 10.1371/journal.pntd.0006970] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Mattia Manica
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Trento, Italy
| | - Giorgio Guzzetta
- Center for Information Technology, Fondazione Bruno Kessler, Trento, Italy
- Epilab-JRU, FEM-FBK Joint Research Unit, Trento, Italy
| | - Federico Filipponi
- Department of Public Health and Infectious Diseases, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Angelo Solimini
- Department of Public Health and Infectious Diseases, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Beniamino Caputo
- Department of Public Health and Infectious Diseases, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Alessandra Della Torre
- Department of Public Health and Infectious Diseases, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Roberto Rosà
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Trento, Italy
- Epilab-JRU, FEM-FBK Joint Research Unit, Trento, Italy
| | - Stefano Merler
- Center for Information Technology, Fondazione Bruno Kessler, Trento, Italy
- Epilab-JRU, FEM-FBK Joint Research Unit, Trento, Italy
| |
Collapse
|
32
|
Affiliation(s)
- Didier Musso
- Unit of Emerging Infectious Diseases, Institut Louis Malardé, Tahiti 98713, French Polynesia; Unité Mixte de Recherche, Vecteurs-Infections Tropicales et Méditerranéennes, Marseille, France.
| | - Philippe Parola
- Unité Mixte de Recherche, Vecteurs-Infections Tropicales et Méditerranéennes, Marseille, France; Institut Hospitalo-Universitaire Méditerranée Infection, Marseille, France
| | - Didier Raoult
- Unité Mixte de Recherche, Microbes Evolution Phylogeny and Infections, Marseille, France; Institut Hospitalo-Universitaire Méditerranée Infection, Marseille, France
| |
Collapse
|
33
|
Abstract
BACKGROUND Diseases caused by Aedes-borne viruses, such as dengue, Zika, chikungunya, and yellow fever, are emerging and reemerging globally. The causes are multifactorial and include global trade, international travel, urbanisation, water storage practices, lack of resources for intervention, and an inadequate evidence base for the public health impact of Aedes control tools. National authorities need comprehensive evidence-based guidance on how and when to implement Aedes control measures tailored to local entomological and epidemiological conditions. METHODS AND FINDINGS This review is one of a series being conducted by the Worldwide Insecticide resistance Network (WIN). It describes a framework for implementing Integrated Aedes Management (IAM) to improve control of diseases caused by Aedes-borne viruses based on available evidence. IAM consists of a portfolio of operational actions and priorities for the control of Aedes-borne viruses that are tailored to different epidemiological and entomological risk scenarios. The framework has 4 activity pillars: (i) integrated vector and disease surveillance, (ii) vector control, (iii) community mobilisation, and (iv) intra- and intersectoral collaboration as well as 4 supporting activities: (i) capacity building, (ii) research, (iii) advocacy, and (iv) policies and laws. CONCLUSIONS IAM supports implementation of the World Health Organisation Global Vector Control Response (WHO GVCR) and provides a comprehensive framework for health authorities to devise and deliver sustainable, effective, integrated, community-based, locally adapted vector control strategies in order to reduce the burden of Aedes-transmitted arboviruses. The success of IAM requires strong commitment and leadership from governments to maintain proactive disease prevention programs and preparedness for rapid responses to outbreaks.
Collapse
Affiliation(s)
- David Roiz
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France
| | - Anne L Wilson
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - Thomas W Scott
- Department of Entomology & Nematology, University of California, Davis, California, United States of America
| | - Dina M Fonseca
- Center for Vector Biology, Rutgers University, New Brunswick, New Jersey, United States of America
| | | | - Pie Müller
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Raman Velayudhan
- Department of Control of Neglected Tropical Diseases (HTM/NTD), World Health Organization (WHO), Geneva, Switzerland
| | - Vincent Corbel
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France
| |
Collapse
|
34
|
Abstract
Yellow fever (YF) is the prototypical hemorrhagic fever and results from infection with yellow fever virus (YFV), which is endemic to regions of Africa and South America. Despite the availability of an effective vaccine, YFV continues to cause disease throughout regions where it is endemic, including intermittent large outbreaks among undervaccinated populations. A number of diagnostic methods and assays have been described for the detection of YFV infection, including viral culture, molecular testing, serology, and antigen detection. Commercial diagnostics are not widely available, and testing is generally performed at a small number of reference laboratories. The goal of this article, therefore, is to review available clinical diagnostics for YFV, which may not be familiar to many practitioners outside areas where it is endemic. Additionally, we identify gaps in our current knowledge about YF that pertain to diagnosis and describe interventions that may improve YFV detection.
Collapse
Affiliation(s)
- Jesse J Waggoner
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Global Health, Rollins School of Public Health, Atlanta, Georgia, USA
| | - Alejandra Rojas
- Departamento de Producción, Instituto de Investigaciones en Ciencias de la Salud, Universidad Nacional de Asunción, Asunción, Paraguay
| | - Benjamin A Pinsky
- Department of Pathology, Stanford University School of Medicine, Stanford, California, USA
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California, USA
| |
Collapse
|
35
|
Faria NR, Kraemer MUG, Hill SC, Goes de Jesus J, Aguiar RS, Iani FCM, Xavier J, Quick J, du Plessis L, Dellicour S, Thézé J, Carvalho RDO, Baele G, Wu CH, Silveira PP, Arruda MB, Pereira MA, Pereira GC, Lourenço J, Obolski U, Abade L, Vasylyeva TI, Giovanetti M, Yi D, Weiss DJ, Wint GRW, Shearer FM, Funk S, Nikolay B, Fonseca V, Adelino TER, Oliveira MAA, Silva MVF, Sacchetto L, Figueiredo PO, Rezende IM, Mello EM, Said RFC, Santos DA, Ferraz ML, Brito MG, Santana LF, Menezes MT, Brindeiro RM, Tanuri A, Dos Santos FCP, Cunha MS, Nogueira JS, Rocco IM, da Costa AC, Komninakis SCV, Azevedo V, Chieppe AO, Araujo ESM, Mendonça MCL, Dos Santos CC, Dos Santos CD, Mares-Guia AM, Nogueira RMR, Sequeira PC, Abreu RG, Garcia MHO, Abreu AL, Okumoto O, Kroon EG, de Albuquerque CFC, Lewandowski K, Pullan ST, Carroll M, de Oliveira T, Sabino EC, Souza RP, Suchard MA, Lemey P, Trindade GS, Drumond BP, Filippis AMB, Loman NJ, Cauchemez S, Alcantara LCJ, Pybus OG. Genomic and epidemiological monitoring of yellow fever virus transmission potential. Science 2018; 361:894-899. [PMID: 30139911 PMCID: PMC6874500 DOI: 10.1126/science.aat7115] [Citation(s) in RCA: 204] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 07/20/2018] [Indexed: 12/21/2022]
Abstract
The yellow fever virus (YFV) epidemic in Brazil is the largest in decades. The recent discovery of YFV in Brazilian Aedes species mosquitos highlights a need to monitor the risk of reestablishment of urban YFV transmission in the Americas. We use a suite of epidemiological, spatial, and genomic approaches to characterize YFV transmission. We show that the age and sex distribution of human cases is characteristic of sylvatic transmission. Analysis of YFV cases combined with genomes generated locally reveals an early phase of sylvatic YFV transmission and spatial expansion toward previously YFV-free areas, followed by a rise in viral spillover to humans in late 2016. Our results establish a framework for monitoring YFV transmission in real time that will contribute to a global strategy to eliminate future YFV epidemics.
Collapse
Affiliation(s)
- N R Faria
- Department of Zoology, University of Oxford, Oxford, UK.
| | - M U G Kraemer
- Department of Zoology, University of Oxford, Oxford, UK
- Computational Epidemiology Lab, Boston Children's Hospital, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - S C Hill
- Department of Zoology, University of Oxford, Oxford, UK
| | - J Goes de Jesus
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - R S Aguiar
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - F C M Iani
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - J Xavier
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - J Quick
- Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK
| | - L du Plessis
- Department of Zoology, University of Oxford, Oxford, UK
| | - S Dellicour
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium
| | - J Thézé
- Department of Zoology, University of Oxford, Oxford, UK
| | - R D O Carvalho
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - G Baele
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium
| | - C-H Wu
- Department of Statistics, University of Oxford, Oxford, UK
| | - P P Silveira
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - M B Arruda
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - M A Pereira
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
| | - G C Pereira
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
| | - J Lourenço
- Department of Zoology, University of Oxford, Oxford, UK
| | - U Obolski
- Department of Zoology, University of Oxford, Oxford, UK
| | - L Abade
- Department of Zoology, University of Oxford, Oxford, UK
- The Global Health Network, University of Oxford, Oxford, UK
| | - T I Vasylyeva
- Department of Zoology, University of Oxford, Oxford, UK
| | - M Giovanetti
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - D Yi
- Department of Statistics, Harvard University, Cambridge, MA, USA
| | - D J Weiss
- Malaria Atlas Project, Big Data Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - G R W Wint
- Department of Zoology, University of Oxford, Oxford, UK
| | - F M Shearer
- Malaria Atlas Project, Big Data Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - S Funk
- Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK
| | - B Nikolay
- Mathematical Modelling of Infectious Diseases and Center of Bioinformatics, Institut Pasteur, Paris, France
- CNRS UMR2000: Génomique Évolutive, Modélisation et Santé, Institut Pasteur, Paris, France
| | - V Fonseca
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- KwaZulu-Natal Research, Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - T E R Adelino
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
| | - M A A Oliveira
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
| | - M V F Silva
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
| | - L Sacchetto
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - P O Figueiredo
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - I M Rezende
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - E M Mello
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - R F C Said
- Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - D A Santos
- Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - M L Ferraz
- Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - M G Brito
- Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - L F Santana
- Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - M T Menezes
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - R M Brindeiro
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - A Tanuri
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - F C P Dos Santos
- Núcleo de Doenças de Transmissão Vetorial, Instituto Adolfo Lutz, São Paulo, Brazil
| | - M S Cunha
- Núcleo de Doenças de Transmissão Vetorial, Instituto Adolfo Lutz, São Paulo, Brazil
| | - J S Nogueira
- Núcleo de Doenças de Transmissão Vetorial, Instituto Adolfo Lutz, São Paulo, Brazil
| | - I M Rocco
- Núcleo de Doenças de Transmissão Vetorial, Instituto Adolfo Lutz, São Paulo, Brazil
| | - A C da Costa
- Instituto de Medicina Tropical e Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - S C V Komninakis
- Retrovirology Laboratory, Federal University of São Paulo, São Paulo, Brazil
- School of Medicine of ABC (FMABC), Clinical Immunology Laboratory, Santo André, São Paulo, Brazil
| | - V Azevedo
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - A O Chieppe
- Coordenação de Vigilância Epidemiológica do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - E S M Araujo
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - M C L Mendonça
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - C C Dos Santos
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - C D Dos Santos
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - A M Mares-Guia
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - R M R Nogueira
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - P C Sequeira
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - R G Abreu
- Departamento de Vigilância das Doenças Transmissíveis da Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília-DF, Brazil
| | - M H O Garcia
- Departamento de Vigilância das Doenças Transmissíveis da Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília-DF, Brazil
| | - A L Abreu
- Secretaria de Vigilância em Saúde, Coordenação Geral de Laboratórios de Saúde Pública, Ministério da Saúde, Brasília-DF, Brazil
| | - O Okumoto
- Secretaria de Vigilância em Saúde, Coordenação Geral de Laboratórios de Saúde Pública, Ministério da Saúde, Brasília-DF, Brazil
| | - E G Kroon
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - C F C de Albuquerque
- Organização Pan - Americana da Saúde/Organização Mundial da Saúde - (OPAS/OMS), Brasília-DF, Brazil
| | - K Lewandowski
- Public Health England, National Infections Service, Porton Down, Salisbury, UK
| | - S T Pullan
- Public Health England, National Infections Service, Porton Down, Salisbury, UK
| | - M Carroll
- NIHR HPRU in Emerging and Zoonotic Infections, Public Health England, London, UK
| | - T de Oliveira
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
- KwaZulu-Natal Research, Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
| | - E C Sabino
- Instituto de Medicina Tropical e Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - R P Souza
- Núcleo de Doenças de Transmissão Vetorial, Instituto Adolfo Lutz, São Paulo, Brazil
| | - M A Suchard
- Department of Biostatistics, UCLA Fielding School of Public Health, University of California, Los Angeles, CA, USA
- Department of Biomathematics and Human Genetics, David Geffen School of Medicine at UCLA, University of California, Los Angeles, CA, USA
| | - P Lemey
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium
| | - G S Trindade
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - B P Drumond
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - A M B Filippis
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - N J Loman
- Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK
| | - S Cauchemez
- Mathematical Modelling of Infectious Diseases and Center of Bioinformatics, Institut Pasteur, Paris, France
- CNRS UMR2000: Génomique Évolutive, Modélisation et Santé, Institut Pasteur, Paris, France
| | - L C J Alcantara
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil.
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - O G Pybus
- Department of Zoology, University of Oxford, Oxford, UK.
| |
Collapse
|
36
|
Abstract
In April 2016, a yellow fever outbreak was detected in Uganda. Removal of contaminating ribosomal RNA in a clinical sample improved the sensitivity of next-generation sequencing. Molecular analyses determined the Uganda yellow fever outbreak was distinct from the concurrent yellow fever outbreak in Angola, improving our understanding of yellow fever epidemiology.
Collapse
|
37
|
Sinigaglia L, Gracias S, Décembre E, Fritz M, Bruni D, Smith N, Herbeuval JP, Martin A, Dreux M, Tangy F, Jouvenet N. Immature particles and capsid-free viral RNA produced by Yellow fever virus-infected cells stimulate plasmacytoid dendritic cells to secrete interferons. Sci Rep 2018; 8:10889. [PMID: 30022130 PMCID: PMC6052170 DOI: 10.1038/s41598-018-29235-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 07/09/2018] [Indexed: 12/18/2022] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are specialized in the production of interferons (IFNs) in response to viral infections. The Flaviviridae family comprises enveloped RNA viruses such as Hepatitis C virus (HCV) and Dengue virus (DENV). Cell-free flaviviridae virions poorly stimulate pDCs to produce IFN. By contrast, cells infected with HCV and DENV potently stimulate pDCs via short-range delivery of viral RNAs, which are either packaged within immature virions or secreted exosomes. We report that cells infected with Yellow fever virus (YFV), the prototypical flavivirus, stimulated pDCs to produce IFNs in a TLR7- and cell contact- dependent manner. Such stimulation was unaffected by the presence of YFV neutralizing antibodies. As reported for DENV, cells producing immature YFV particles were more potent at stimulating pDCs than cells releasing mature virions. Additionally, cells replicating a release-deficient YFV mutant or a YFV subgenomic RNA lacking structural protein-coding sequences participated in pDC stimulation. Thus, viral RNAs produced by YFV-infected cells reach pDCs via at least two mechanisms: within immature particles and as capsid-free RNAs. Our work highlights the ability of pDCs to respond to a variety of viral RNA-laden carriers generated from infected cells.
Collapse
Affiliation(s)
- Laura Sinigaglia
- Viral Genomics and Vaccination Unit, UMR3569 CNRS, Institut Pasteur, Paris, France
| | - Ségolène Gracias
- Viral Genomics and Vaccination Unit, UMR3569 CNRS, Institut Pasteur, Paris, France
| | - Elodie Décembre
- CIRI, Inserm U1111, CNRS UMR5308, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, Lyon, France
| | - Matthieu Fritz
- Molecular Genetics of RNA Viruses Unit, UMR3569 CNRS, Institut Pasteur, Paris, France
| | - Daniela Bruni
- Viral Genomics and Vaccination Unit, UMR3569 CNRS, Institut Pasteur, Paris, France
| | - Nikaïa Smith
- Chemistry & Biology, Modeling & Immunology for Therapy, UMR8601 CNRS, Université Paris Descartes, Paris, France
| | - Jean-Philippe Herbeuval
- Chemistry & Biology, Modeling & Immunology for Therapy, UMR8601 CNRS, Université Paris Descartes, Paris, France
| | - Annette Martin
- Molecular Genetics of RNA Viruses Unit, UMR3569 CNRS, Institut Pasteur, Paris, France
| | - Marlène Dreux
- CIRI, Inserm U1111, CNRS UMR5308, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, Lyon, France
| | - Frédéric Tangy
- Viral Genomics and Vaccination Unit, UMR3569 CNRS, Institut Pasteur, Paris, France
| | - Nolwenn Jouvenet
- Viral Genomics and Vaccination Unit, UMR3569 CNRS, Institut Pasteur, Paris, France.
| |
Collapse
|
38
|
Song R, Guan S, Lee SS, Chen Z, Chen C, Han L, Xu Y, Li A, Zeng H, Ye H, Zhang F. Late or Lack of Vaccination Linked to Importation of Yellow Fever from Angola to China. Emerg Infect Dis 2018; 24. [PMID: 29723485 PMCID: PMC6038747 DOI: 10.3201/eid2407.171868] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
During March and April 2016, 11 yellow fever cases were identified in China. We report epidemic and viral information for 10 of these patients, 6 of whom had been vaccinated before travel. Phylogenetic analyses suggest these viruses nested within the diversity of strains endemic to Angola, where an outbreak began in 2015.
Collapse
|
39
|
Fernandes NCCDA, Cunha MS, Guerra JM, Réssio RA, Cirqueira CDS, Iglezias SD, de Carvalho J, Araujo ELL, Catão-Dias JL, Díaz-Delgado J. Outbreak of Yellow Fever among Nonhuman Primates, Espirito Santo, Brazil, 2017. Emerg Infect Dis 2018; 23:2038-2041. [PMID: 29148378 PMCID: PMC5708241 DOI: 10.3201/eid2312.170685] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
In January 2017, a yellow fever outbreak occurred in Espirito Santo, Brazil, where human immunization coverage is low. Histologic, immunohistologic, and PCR examinations were performed for 22 deceased nonhuman New World primates; typical yellow fever features were found in 21. Diagnosis in nonhuman primates prompted early public health response.
Collapse
|
40
|
Douam F, Ploss A. Yellow Fever Virus: Knowledge Gaps Impeding the Fight Against an Old Foe. Trends Microbiol 2018; 26:913-928. [PMID: 29933925 DOI: 10.1016/j.tim.2018.05.012] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 05/07/2018] [Accepted: 05/22/2018] [Indexed: 12/11/2022]
Abstract
Yellow fever (YF) was one of the most dangerous infectious diseases of the 18th and 19th centuries, resulting in mass casualties in Africa and the Americas. The etiologic agent is yellow fever virus (YFV), and its live-attenuated form, YFV-17D, remains one of the most potent vaccines ever developed. During the first half of the 20th century, vaccination combined with mosquito control eradicated YFV transmission in urban areas. However, the recent 2016-2018 outbreaks in areas with historically low or no YFV activity have raised serious concerns for an estimated 400-500 million unvaccinated people who now live in at-risk areas. Once a forgotten disease, we highlight here that YF still represents a very real threat to human health and economies. As many gaps remain in our understanding of how YFV interacts with the human host and causes disease, there is an urgent need to address these knowledge gaps and propel YFV research forward.
Collapse
Affiliation(s)
- Florian Douam
- Department of Molecular Biology, Princeton University, 110 Lewis Thomas Laboratory, Washington Road, Princeton, NJ 08544, USA
| | - Alexander Ploss
- Department of Molecular Biology, Princeton University, 110 Lewis Thomas Laboratory, Washington Road, Princeton, NJ 08544, USA.
| |
Collapse
|
41
|
Costa-Pereira C, Campi-Azevedo AC, Coelho-dos-Reis JG, Peruhype-Magalhães V, Araújo MSS, do Vale Antonelli LR, Fonseca CT, Lemos JA, Malaquias LCC, de Souza Gomes M, Rodrigues Amaral L, Rios M, Chancey C, Persi HR, Pereira JM, de Sousa Maia MDL, Freire MDS, Martins RDM, Homma A, Simões M, Yamamura AY, Farias RHG, Romano APM, Domingues CM, Tauil PL, Vasconcelos PFC, Caldas IR, Camacho LA, Teixeira-Carvalho A, Martins-Filho OA. Multi-parameter approach to evaluate the timing of memory status after 17DD-YF primary vaccination. PLoS Negl Trop Dis 2018; 12:e0006462. [PMID: 29879134 PMCID: PMC5991646 DOI: 10.1371/journal.pntd.0006462] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 04/19/2018] [Indexed: 12/30/2022] Open
Abstract
In this investigation, machine-enhanced techniques were applied to bring about scientific insights to identify a minimum set of phenotypic/functional memory-related biomarkers for post-vaccination follow-up upon yellow fever (YF) vaccination. For this purpose, memory status of circulating T-cells (Naïve/early-effector/Central-Memory/Effector-Memory) and B-cells (Naïve/non-Classical-Memory/Classical-Memory) along with the cytokine profile (IFN/TNF/IL-5/IL-10) were monitored before-NV(day0) and at distinct time-points after 17DD-YF primary vaccination—PV(day30-45); PV(year1-9) and PV(year10-11). A set of biomarkers (eEfCD4; EMCD4; CMCD19; EMCD8; IFNCD4; IL-5CD8; TNFCD4; IFNCD8; TNFCD8; IL-5CD19; IL-5CD4) were observed in PV(day30-45), but not in NV(day0), with most of them still observed in PV(year1-9). Deficiencies of phenotypic/functional biomarkers were observed in NV(day0), while total lack of memory-related attributes was observed in PV(year10-11), regardless of the age at primary vaccination. Venn-diagram analysis pre-selected 10 attributes (eEfCD4, EMCD4, CMCD19, EMCD8, IFNCD4, IL-5CD8, TNFCD4, IFNCD8, TNFCD8 and IL-5CD4), of which the overall mean presented moderate accuracy to discriminate PV(day30-45)&PV(year1-9) from NV(day0)&PV(year10-11). Multi-parameter approaches and decision-tree algorithms defined the EMCD8 and IL-5CD4 attributes as the top-two predictors with moderated performance. Together with the PRNT titers, the top-two biomarkers led to a resultant memory status observed in 80% and 51% of volunteers in PV(day30-45) and PV(year1-9), contrasting with 0% and 29% found in NV(day0) and PV(year10-11), respectively. The deficiency of memory-related attributes observed at PV(year10-11) underscores the conspicuous time-dependent decrease of resultant memory following17DD-YF primary vaccination that could be useful to monitor potential correlates of protection in areas under risk of YF transmission. In this study, a set of immunological biomarkers was studied in order to understand protection upon vaccination with yellow fever (17DD-YF) vaccine. For this purpose, the immunological memory statuses of circulating T- and B-cells along with the plasmatic molecules (cytokine profile) were monitored before and at distinct time-points after primary vaccination. A set of biomarkers were measured in the peripheral blood of primary 17-DD vaccinees after 30–45 days of vaccination, which were relatively sustained in vaccinees after 1–9 years of primary vaccination. Deficiencies and a total lack of memory-related immunological responses to yellow fever virus were observed after 10 to 11 years post-vaccination, regardless of the age at primary vaccination. Multi-parameter approaches defined two biomarkers (EMCD8 and IL-5CD4) as the top-two predictors of protection. The deficiency of attributes observed after 10–11 years post-vaccination reveals a time-dependent decrease of immunological memory responses related to the 17DD-YF vaccination. Therefore, these results highly suggest the need for close attention to vaccinees in YF endemic areas with more than 10 years of vaccination. At last, the biomarkers proposed in this study could be useful to monitor protection in YF-vaccinees living in or travelling to areas under risk of YF transmission.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Jandira Aparecida Lemos
- Secretaria de Estado de Saúde, Governo do Estado de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | | | - Matheus de Souza Gomes
- Laboratório de Bioinformática e Análises Moleculares, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Laurence Rodrigues Amaral
- Laboratório de Bioinformática e Análises Moleculares, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Maria Rios
- Center for Biologics Evaluation and Research – CBER – Food and Drug Administration (FDA), Silver Spring, Maryland, United States of America
| | - Caren Chancey
- Center for Biologics Evaluation and Research – CBER – Food and Drug Administration (FDA), Silver Spring, Maryland, United States of America
| | | | | | | | - Marcos da Silva Freire
- Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos- FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Akira Homma
- Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos- FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marisol Simões
- Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos- FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Anna Yoshida Yamamura
- Instituto de Tecnologia em Imunobiológicos Bio-Manguinhos- FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Carla Magda Domingues
- Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília, Federal District, Brazil
| | | | | | | | - Luiz Antônio Camacho
- Escola Nacional de Saúde Pública, FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | |
Collapse
|
42
|
Clements AN, Harbach RE. Controversies over the scientific name of the principal mosquito vector of yellow fever virus - expediency versus validity. J Vector Ecol 2018; 43:1-14. [PMID: 29757506 DOI: 10.1111/jvec.12277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 02/15/2018] [Indexed: 06/08/2023]
Abstract
The history of the scientific name of the yellow fever mosquito, the vector of yellow fever virus, ranges from 1757 to the early twenty-first century. In his 1757 work Iter Palaestinum, Frederic Hasselquist gave the name Culex aegypti to a mosquito species responsible for fierce attacks on humans in Egypt. That name was never later ascribed to Hasselquist as author, but to Linnaeus, although the name never appeared in any of Linnaeus' publications. In Cuba, at the end of the nineteenth century, the vector of the unknown infectious agent of yellow fever was first identified as Culex mosquito and later more validly named Stegomyia fasciata. Mosquito taxonomists differed strongly about the name of the mosquito through much of the twentieth century. Interventions by the International Commission on Zoological Nomenclature imposed a biologically invalid specific name, and in the early twenty-first century a phylogenetic analysis of the culicid tribe Aedini restored the genus Stegomyia from a century earlier. That action was short-lived. A phylogenetic reassessment resulted in the return of Stegomyia to subgeneric rank in Aedes; thus, the name of the yellow fever mosquito survives in the traditional classification of convenience as the trinomial Aedes (Stegomyia) aegypti (Linnaeus).
Collapse
Affiliation(s)
- Alan N Clements
- Emeritus Professor, London School of Tropical Medicine and Hygiene, London, UK
| | - Ralph E Harbach
- Department of Life Sciences, Natural History Museum, London, UK
| |
Collapse
|
43
|
de Rezende IM, Sacchetto L, Munhoz de Mello É, Alves PA, Iani FCDM, Adelino TÉR, Duarte MM, Cury ALF, Bernardes AFL, Santos TA, Pereira LS, Dutra MRT, Ramalho DB, de Thoisy B, Kroon EG, Trindade GDS, Drumond BP. Persistence of Yellow fever virus outside the Amazon Basin, causing epidemics in Southeast Brazil, from 2016 to 2018. PLoS Negl Trop Dis 2018; 12:e0006538. [PMID: 29864115 PMCID: PMC6002110 DOI: 10.1371/journal.pntd.0006538] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 06/14/2018] [Accepted: 05/17/2018] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Yellow fever (YF) is endemic in the Brazilian Amazon Basin, and sporadic outbreaks take place outside the endemic area in Brazil. Since 2016, YF epidemics have been occurring in Southeast Brazil, with more than 1,900 human cases and more than 1,600 epizooties of non-human primates (NHPs) reported until April 2018. Previous studies have demonstrated that Yellow fever virus (YFV) causing outbreaks in 2017 formed a monophyletic group. METHODOLOGY/PRINCIPAL FINDINGS Aiming to decipher the origin of the YFV responsible for the recent epidemics, we obtained nucleotide sequences of YFV detected in humans (n = 6) and NHPs (n = 10) from Minas Gerais state during 2017-2018. Next, we performed evolutionary analyses and discussed the results in the light of epidemiological records (official numbers of YFV cases at each Brazilian Federative unit, reported by the Brazilian Ministry of Health). Nucleotide sequences of YFV from Southeast Brazil from 2016 to 2018 were highly conserved and formed a monophyletic lineage (BR-YFV_2016/18) within the genotype South America I. Different clusters were observed within lineage BR-YFV_2016/18, one containing the majority of isolates (from humans and NHPs), indicating the sylvatic transmission of YFV. We also detected a cluster characterized by two synapomorphies (amino acid substitutions) that contained YFV only associated with NHP what should be further investigated. The topology of lineage BR-YFV_2016/18 was congruent with epidemiological and temporal patterns of the ongoing epidemic. YFV isolates detected in 2016, in São Paulo state were located in the most basal position of the lineage, followed by the isolates from Minas Gerais and Espírito Santo obtained in 2017 and 2018. The most recent common ancestor of the lineage BR-YFV_2016/18 dated to 2015 (95% credible intervals = 2014-2016), in a period that was coincident with the reemergence of YFV in the Midwest region of Brazil. CONCLUSIONS The results demonstrated a single introduction of YFV in the Southeast region and the silent viral circulation before the onset of the outbreaks in 2016. Evolutionary analyses combined with epidemiological records supported the idea that BR-YFV_2016/18 was probably introduced from the Midwest into the Southeast region, possibly in São Paulo state. The persistence of YFV in the Southeast region, causing epidemics from 2016 to 2018, suggests that this region presents suitable ecological and climatic conditions for YFV maintenance during the epidemic and interepidemic seasons. This fact poses risks for the establishing of YF enzootic cycles and epidemics, outside the Amazon Basin in Brazil. YF surveillance and studies of viral dynamics deserve particular attention, especially in Midwest, Southeast and neighbor regions which are the main areas historically associated with YF outbreaks outside the Amazon Basin. YFV persistence in Southeast Brazil should be carefully considered in the context of public health, especially for public health decision-makers and researchers.
Collapse
Affiliation(s)
- Izabela Maurício de Rezende
- Laboratório de Vírus, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Lívia Sacchetto
- Laboratório de Vírus, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Érica Munhoz de Mello
- Centro de Controle de Zoonoses da Prefeitura de Belo Horizonte, Belo Horizonte, Minas Gerais, Brazil
| | - Pedro Augusto Alves
- Laboratório de Imunologia de Doenças Virais, Instituto René Rachou- Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
| | - Felipe Campos de Melo Iani
- Serviço de Virologia e Riquetsioses, Fundação Ezequiel Dias- LACEN/MG, Belo Horizonte, Minas Gerais, Brazil
| | | | - Myrian Morato Duarte
- Serviço de Virologia e Riquetsioses, Fundação Ezequiel Dias- LACEN/MG, Belo Horizonte, Minas Gerais, Brazil
| | - Ana Luísa Furtado Cury
- Serviço de Virologia e Riquetsioses, Fundação Ezequiel Dias- LACEN/MG, Belo Horizonte, Minas Gerais, Brazil
| | | | - Tayrine Araújo Santos
- Hospital Eduardo de Menezes, Fundação Hospitalar do Estado de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Leonardo Soares Pereira
- Hospital Eduardo de Menezes, Fundação Hospitalar do Estado de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Maria Rita Teixeira Dutra
- Hospital Eduardo de Menezes, Fundação Hospitalar do Estado de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Dario Brock Ramalho
- Hospital Eduardo de Menezes, Fundação Hospitalar do Estado de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Benoit de Thoisy
- Laboratoire des Interaction Virus-Hôtes, Institut Pasteur, Cayenne, French Guiana
| | - Erna Geessien Kroon
- Laboratório de Vírus, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Giliane de Souza Trindade
- Laboratório de Vírus, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Betânia Paiva Drumond
- Laboratório de Vírus, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| |
Collapse
|
44
|
Klitting R, Roth L, Rey FA, de Lamballerie X. Molecular determinants of Yellow Fever Virus pathogenicity in Syrian Golden Hamsters: one mutation away from virulence. Emerg Microbes Infect 2018; 7:51. [PMID: 29593212 PMCID: PMC5874243 DOI: 10.1038/s41426-018-0053-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 02/07/2018] [Accepted: 02/11/2018] [Indexed: 11/12/2022]
Abstract
Yellow fever virus (Flavivirus genus) is an arthropod-borne pathogen, which can infect humans, causing a severe viscerotropic disease with a high mortality rate. Adapted viral strains allow the reproduction of yellow fever disease in hamsters with features similar to the human disease. Here, we used the Infectious Subgenomic Amplicons reverse genetics method to produce an equivalent to the hamster-virulent strain, Yellow Fever Ap7, by introducing a set of four synonymous and six nonsynonymous mutations into a single subgenomic amplicon, derived from the sequence of the Asibi strain. The resulting strain, Yellow Fever Ap7M, induced a disease similar to that described for Ap7 in terms of symptoms, weight evolution, viral loads in the liver and lethality. Using the same methodology, we produced mutant strains derived from either Ap7M or Asibi viruses and investigated the role of each of Ap7M nonsynonymous mutations in its in vivo phenotype. This allowed identifying key components of the virulence mechanism in hamsters. In Ap7M virus, the reversion of either E/Q27H or E/D155A mutations led to an important reduction of both virulence and in vivo replicative fitness. In addition, the introduction of the single D155A Ap7M mutation within the E protein of the Asibi virus was sufficient to drastically modify its phenotype in hamsters toward both a greater replication efficiency and virulence. Finally, inspection of the Asibi strain E protein structure combined to in vivo testing revealed the importance of an exposed α-helix in domain I, containing residues 154 and 155, for Ap7M virulence in hamsters.
Collapse
Affiliation(s)
- Raphaëlle Klitting
- UMR EPV: "Émergence des Pathologies Virales", Aix-Marseille University - IRD 190 - Inserm 1207 - EHESP - IHU Méditerranée Infection, 13385, Marseille Cedex 05, France.
| | - Laura Roth
- UMR EPV: "Émergence des Pathologies Virales", Aix-Marseille University - IRD 190 - Inserm 1207 - EHESP - IHU Méditerranée Infection, 13385, Marseille Cedex 05, France
| | - Félix A Rey
- Structural Virology Unit, Virology Department, Institut Pasteur, 75015, Paris, France
- CNRS UMR3569, Institut Pasteur, 75015, Paris, France
| | - Xavier de Lamballerie
- UMR EPV: "Émergence des Pathologies Virales", Aix-Marseille University - IRD 190 - Inserm 1207 - EHESP - IHU Méditerranée Infection, 13385, Marseille Cedex 05, France
| |
Collapse
|
45
|
Hamlet A, Jean K, Perea W, Yactayo S, Biey J, Van Kerkhove M, Ferguson N, Garske T. The seasonal influence of climate and environment on yellow fever transmission across Africa. PLoS Negl Trop Dis 2018; 12:e0006284. [PMID: 29543798 PMCID: PMC5854243 DOI: 10.1371/journal.pntd.0006284] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 01/30/2018] [Indexed: 11/19/2022] Open
Abstract
Background Yellow fever virus (YFV) is a vector-borne flavivirus endemic to Africa and Latin America. Ninety per cent of the global burden occurs in Africa where it is primarily transmitted by Aedes spp, with Aedes aegypti the main vector for urban yellow fever (YF). Mosquito life cycle and viral replication in the mosquito are heavily dependent on climate, particularly temperature and rainfall. We aimed to assess whether seasonal variations in climatic factors are associated with the seasonality of YF reports. Methodology/Principal findings We constructed a temperature suitability index for YFV transmission, capturing the temperature dependence of mosquito behaviour and viral replication within the mosquito. We then fitted a series of multilevel logistic regression models to a dataset of YF reports across Africa, considering location and seasonality of occurrence for seasonal models, against the temperature suitability index, rainfall and the Enhanced Vegetation Index (EVI) as covariates alongside further demographic indicators. Model fit was assessed by the Area Under the Curve (AUC), and models were ranked by Akaike’s Information Criterion which was used to weight model outputs to create combined model predictions. The seasonal model accurately captured both the geographic and temporal heterogeneities in YF transmission (AUC = 0.81), and did not perform significantly worse than the annual model which only captured the geographic distribution. The interaction between temperature suitability and rainfall accounted for much of the occurrence of YF, which offers a statistical explanation for the spatio-temporal variability in transmission. Conclusions/Significance The description of seasonality offers an explanation for heterogeneities in the West-East YF burden across Africa. Annual climatic variables may indicate a transmission suitability not always reflected in seasonal interactions. This finding, in conjunction with forecasted data, could highlight areas of increased transmission and provide insights into the occurrence of large outbreaks, such as those seen in Angola, the Democratic Republic of the Congo and Brazil. In this article, we describe the development of a model to quantify the seasonal dynamics of yellow fever virus (YFV) transmission across Africa. YFV is a flavivirus transmitted, within Africa, primarily by Aedes spp where it causes an estimated 78,000 deaths a year despite the presence of a safe and effective vaccine. The importance of sufficient vaccination, made difficult by a global shortage, has been highlighted by recent large scale, devastating, outbreaks in Angola, the Democratic Republic of the Congo and Brazil. Here we describe a novel way of parameterising the effect of temperature on YFV transmission and implement statistical models to predict both the geographic and temporal heterogeneities in transmissions, while demonstrating their robustness in comparison to models simply predicting geographic distribution. We believe this quantification of seasonality could lead to more precise applications of vaccination campaigns and vector-control programmes. In turn this would help maximise their impact, especially vital with limited resources, and could contribute to lessening the risk of large scale outbreaks. Not only this, but the methods described here could be applied to other Aedes-borne diseases and as such provide a useful tool in understanding, and combatting, several other important diseases such as dengue and zika.
Collapse
Affiliation(s)
- Arran Hamlet
- MRC Centre for Outbreak Analysis and Modelling, Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom
- * E-mail:
| | - Kévin Jean
- MRC Centre for Outbreak Analysis and Modelling, Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom
- Laboratoire MESuRS, Conservatoire National des Arts et Métiers, Paris, France
| | - William Perea
- WHO, Infectious Hazard Management, Geneva, Switzerland
| | | | - Joseph Biey
- WHO-AFRO, IST/WA, Ouagadougou, Burkina, Faso
| | - Maria Van Kerkhove
- WHO, Infectious Hazard Management, Geneva, Switzerland
- Centre for Global Health, Institut Pasteur, Paris, France
| | - Neil Ferguson
- MRC Centre for Outbreak Analysis and Modelling, Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom
| | - Tini Garske
- MRC Centre for Outbreak Analysis and Modelling, Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom
| |
Collapse
|
46
|
|
47
|
Inocente EA, Shaya M, Acosta N, Rakotondraibe LH, Piermarini PM. A natural agonist of mosquito TRPA1 from the medicinal plant Cinnamosma fragrans that is toxic, antifeedant, and repellent to the yellow fever mosquito Aedes aegypti. PLoS Negl Trop Dis 2018; 12:e0006265. [PMID: 29425195 PMCID: PMC5823474 DOI: 10.1371/journal.pntd.0006265] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 02/22/2018] [Accepted: 01/24/2018] [Indexed: 12/11/2022] Open
Abstract
Plants produce various secondary metabolites that offer a potential source of novel insecticides and repellents for the control of mosquito vectors. Plants of the genus Cinnamosma are endemic to, and widely-distributed throughout, the island of Madagascar. The barks of these species are commonly used in traditional medicines for treating a wide range of maladies. The therapeutic nature of the bark is thought to be associated with its enrichment of pungent drimane sesquiterpenes, which elicit antifeedant and toxic effects in some insects. Here we test the hypothesis that a bark extract of Cinnamosma fragrans (CINEX) and its major drimane sesquiterpenes are insecticidal, antifeedant, and repellent to Aedes aegypti, the principal mosquito vector of chikungunya, dengue, yellow fever, and Zika viruses. We demonstrate that CINEX is 1) toxic to larval and adult female mosquitoes, and 2) antifeedant and repellent to adult female mosquitoes. Moreover, we show that cinnamodial (CDIAL), a sesquiterpene dialdehyde isolated from CINEX, duplicates these bioactivities and exhibits similar toxic potency against pyrethroid-susceptible and -resistant strains of Ae. aegypti. Importantly, we show that CDIAL is an agonist of heterologously-expressed mosquito Transient Receptor Potential A1 (TRPA1) channels, and the antifeedant activity of CDIAL is dampened in a TRPA1-deficient strain of Ae. aegypti (TRPA1-/-). Intriguingly, TRPA1-/- mosquitoes do not exhibit toxic resistance to CDIAL. The data indicate that modulation of TRPA1 is required for the sensory detection and avoidance of CDIAL by mosquitoes, but not for inducing the molecule's toxicity. Our study suggests that CDIAL may serve as a novel chemical platform for the development of natural product-based insecticides and repellents for controlling mosquito vectors.
Collapse
Affiliation(s)
- Edna Alfaro Inocente
- Department of Entomology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster, Ohio, United States of America
| | - Marguerite Shaya
- Department of Entomology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster, Ohio, United States of America
| | - Nuris Acosta
- Department of Entomology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster, Ohio, United States of America
| | | | - Peter M. Piermarini
- Department of Entomology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster, Ohio, United States of America
| |
Collapse
|
48
|
Hamrick PN, Aldighieri S, Machado G, Leonel DG, Vilca LM, Uriona S, Schneider MC. Geographic patterns and environmental factors associated with human yellow fever presence in the Americas. PLoS Negl Trop Dis 2017; 11:e0005897. [PMID: 28886023 PMCID: PMC5607216 DOI: 10.1371/journal.pntd.0005897] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 09/20/2017] [Accepted: 08/22/2017] [Indexed: 11/24/2022] Open
Abstract
Background In the Americas, yellow fever virus transmission is a latent threat due to the proximity between urban and wild environments. Although yellow fever has nearly vanished from North and Central America, there are still 13 countries in the Americas considered endemic by the World Health Organization. Human cases usually occur as a result of the exposure to sylvatic yellow fever in tropical forested environments; but urban outbreaks reported during the last decade demonstrate that the risk in this environment still exists. The objective of this study was to identify spatial patterns and the relationship between key geographic and environmental factors with the distribution of yellow fever human cases in the Americas. Methodology/Principal findings An ecological study was carried out to analyze yellow fever human cases reported to the Pan American Health Organization from 2000 to 2014, aggregated by second administrative level subdivisions (counties). Presence of yellow fever by county was used as the outcome variable and eight geo-environmental factors were used as independent variables. Spatial analysis was performed to identify and examine natural settings per county. Subsequently, a multivariable logistic regression model was built. During the study period, 1,164 cases were reported in eight out of the 13 endemic countries. Nearly 83.8% of these cases were concentrated in three countries: Peru (37.4%), Brazil (28.1%) and Colombia (18.4%); and distributed in 57 states/provinces, specifically in 286 counties (3.4% of total counties). Yellow fever presence was significantly associated with altitude, rain, diversity of non-human primate hosts and temperature. A positive spatial autocorrelation revealed a clustered geographic pattern in 138/286 yellow fever positive counties (48.3%). Conclusions/Significance A clustered geographic pattern of yellow fever was identified mostly along the Andes eastern foothills. This risk map could support health policies in endemic countries. Geo-environmental factors associated with presence of yellow fever could help predict and adjust the limits of other risk areas of epidemiological concern. Yellow fever (YF) is a zoonotic disease caused by yellow fever virus (YFV), which is transmitted to humans through the bite of an infected mosquito. Sylvatic and urban cycles have been present in different periods, but currently most cases result from human exposure to jungle or forested environments. The World Health Organization considers 13 countries endemic for YFV in the Americas. The objective of this study was to identify spatial patterns and the relationship between key geographic and environmental factors with the distribution of YF human cases in the Americas. Cases of YF from 2000 to 2014 aggregated by county and eight geo-environmental factors were studied via spatial and statistical analysis. A total of 1,164 cases were reported in this time period, with the majority of them located in Peru, Brazil and Colombia. Yellow fever presence was associated with rain, altitude, diversity of non-human primate hosts and temperature. A large clustered geographic pattern of YF cases was identified along the Andes eastern foothills. Although YF cases can be seen as rare events, the results of this study demonstrate that YF human cases in the Americas are geographically concentrated and are not happening at random, even within areas known to be at risk. Determining the geo-environmental factors related to YFV is essential to delineate risk areas and to consequently improve resource allocation and prevent human cases.
Collapse
Affiliation(s)
- Patricia Najera Hamrick
- PAHO Health Emergencies Department, Pan American Health Organization, Washington D.C., United States of America
- * E-mail:
| | - Sylvain Aldighieri
- PAHO Health Emergencies Department, Pan American Health Organization, Washington D.C., United States of America
| | - Gustavo Machado
- Veterinary Population Medicine Department, University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Deise Galan Leonel
- PAHO Health Emergencies Department, Pan American Health Organization, Washington D.C., United States of America
| | - Luz Maria Vilca
- Preventive Medicine and Epidemiology Department, Hospital Universitari Vall d’Hebron, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Sonia Uriona
- Preventive Medicine and Epidemiology Department, Hospital Universitari Vall d’Hebron, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Maria Cristina Schneider
- PAHO Health Emergencies Department, Pan American Health Organization, Washington D.C., United States of America
| |
Collapse
|
49
|
Abstract
The flaviviruses are small single-stranded RNA viruses that are typically transmitted by mosquito or tick vectors. These "arboviruses" are found around the world and account for a significant number of cases of human disease. The flaviviruses cause diseases ranging from mild or sub-clinical infections to lethal hemorrhagic fever or encephalitis. In many cases, survivors of neurologic flavivirus infections suffer long-term debilitating sequelae. Much like the emergence of West Nile virus in the United States in 1999, the recent emergence of Zika virus in the Americas has significantly increased the awareness of mosquito-borne viruses. The diseases caused by several flaviviruses have been recognized for decades, if not centuries. However, there is still a lot that is unknown about the flaviviruses as the recent experience with Zika virus has taught us. The objective of this review is to provide a general overview and some historical perspective on several flaviviruses that cause significant human disease. In addition, available medical countermeasures and significant gaps in our understanding of flavivirus biology are also discussed.
Collapse
Affiliation(s)
- Michael R Holbrook
- NIAID Integrated Research Facility, 8200 Research Plaza, Ft. Detrick, Frederick, MD 21702, USA.
| |
Collapse
|
50
|
Dellagi K, Salez N, Maquart M, Larrieu S, Yssouf A, Silaï R, Leparc-Goffart I, Tortosa P, de Lamballerie X. Serological Evidence of Contrasted Exposure to Arboviral Infections between Islands of the Union of Comoros (Indian Ocean). PLoS Negl Trop Dis 2016; 10:e0004840. [PMID: 27977670 PMCID: PMC5157944 DOI: 10.1371/journal.pntd.0004840] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 06/20/2016] [Indexed: 01/19/2023] Open
Abstract
A cross sectional serological survey of arboviral infections in humans was conducted on the three islands of the Union of Comoros, Indian Ocean, in order to test a previously suggested contrasted exposure of the three neighboring islands to arthropod-borne epidemics. Four hundred human sera were collected on Ngazidja (Grande Comore), Mwali (Mohéli) and Ndzouani (Anjouan), and were tested by ELISA for IgM and/or IgG antibodies to Dengue (DENV), Chikungunya (CHIKV), Rift Valley fever (RVFV), West Nile (WNV), Tick borne encephalitis (TBEV) and Yellow fever (YFV) viruses and for neutralizing antibodies to DENV serotypes 1-4. Very few sera were positive for IgM antibodies to the tested viruses indicating that the sero-survey was performed during an inter epidemic phase for the investigated arbovirus infections, except for RVF which showed evidence of recent infections on all three islands. IgG reactivity with at least one arbovirus was observed in almost 85% of tested sera, with seropositivity rates increasing with age, indicative of an intense and long lasting exposure of the Comorian population to arboviral risk. Interestingly, the positivity rates for IgG antibodies to DENV and CHIKV were significantly higher on Ngazidja, confirming the previously suggested prominent exposure of this island to these arboviruses, while serological traces of WNV infection were detected most frequently on Mwali suggesting some transmission specificities associated with this island only. The study provides the first evidence for circulation of RVFV in human populations from the Union of Comoros and further suggests that the virus is currently circulating on the three islands in an inconspicuous manner. This study supports contrasted exposure of the islands of the Comoros archipelago to arboviral infections. The observation is discussed in terms of ecological factors that may affect the abundance and distribution of vector populations on the three islands as well as concurring anthropogenic factors that may impact arbovirus transmission in this diverse island ecosystem.
Collapse
Affiliation(s)
- Koussay Dellagi
- Centre de Recherche et de Veille sur les Maladies Emergentes dans l’Océan Indien, (CRVOI) Plateforme de Recherche CYROI, Sainte Clotilde, Reunion Island, France
- Unité Mixte de Recherche «Processus Infectieux en Milieu Insulaire Tropical» (UMR PIMIT), INSERM 1187 CNRS 9192 IRD 249 Université de La Réunion, Plateforme de Recherche CYROI, Sainte Clotilde, La Réunion, France
- * E-mail:
| | - Nicolas Salez
- Aix Marseille Université, IRD, EHESP French School of Public Health, EPV UMR_D 190 "Emergence des Pathologies Virales", Marseille, France
| | - Marianne Maquart
- French National Reference Centre for Arbovirus, IRBA, Marseille, France
| | - Sophie Larrieu
- Cellule Interrégionale d'Épidémiologie Océan Indien (Cire OI), Institut de Veille Sanitaire, Saint Denis, La Réunion, France
| | - Amina Yssouf
- Programme National de Lutte contre le Paludisme, Moroni, Union of the Comoros
| | - Rahamatou Silaï
- Programme National de Lutte contre le Paludisme, Moroni, Union of the Comoros
| | | | - Pablo Tortosa
- Centre de Recherche et de Veille sur les Maladies Emergentes dans l’Océan Indien, (CRVOI) Plateforme de Recherche CYROI, Sainte Clotilde, Reunion Island, France
- Unité Mixte de Recherche «Processus Infectieux en Milieu Insulaire Tropical» (UMR PIMIT), INSERM 1187 CNRS 9192 IRD 249 Université de La Réunion, Plateforme de Recherche CYROI, Sainte Clotilde, La Réunion, France
| | - Xavier de Lamballerie
- Aix Marseille Université, IRD, EHESP French School of Public Health, EPV UMR_D 190 "Emergence des Pathologies Virales", Marseille, France
| |
Collapse
|