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Schuab G, Tosta S, Moreno K, Fonseca V, Santos LA, Slavov SN, Kashima S, Ciccozzi M, Lourenço J, Cella E, de Oliveira C, Cavalcanti AC, Junior Alcantara LC, de Bruycker-Nogueira F, Bispo de Filippis AM, Giovanetti M. Exploring the urban arbovirus landscape in Rio de Janeiro, Brazil: transmission dynamics and patterns of disease spread. LANCET REGIONAL HEALTH. AMERICAS 2024; 35:100786. [PMID: 38846808 PMCID: PMC11152967 DOI: 10.1016/j.lana.2024.100786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 05/07/2024] [Accepted: 05/13/2024] [Indexed: 06/09/2024]
Abstract
Background This study focuses on urban arboviruses, specifically dengue (DENV), chikungunya (CHIKV), and Zika (ZIKV), which pose a significant public health challenge in Rio de Janeiro state, Southeast Brazil. In our research, we highlight critical findings on the transmission dynamics of these arboviruses in Rio de Janeiro, identifying distinct patterns of disease spread. Methods By combining genomic data with case reports from the Brazilian Ministry of Health, we have analysed the phylogenetics, prevalence and spatial distribution of these endemic viruses within the state. Findings Our results revealed sustained DENV transmission primarily in the northern part of the state, a significant ZIKV epidemic in 2016 affecting all mesoregions, and two major CHIKV outbreaks in 2018 and 2019, predominantly impacting the northern and southern areas. Our analysis suggests an inverse relationship between arboviral case incidence and urban density, with less populous regions experiencing higher transmission rates, potentially attributed to a complex interplay of factors such as the efficacy of vector control measures, environmental conditions, local immunity levels, and human mobility. Furthermore, our investigation unveiled distinct age and gender trends among affected individuals. Notably, dengue cases were predominantly observed in young adults aged 32, while chikungunya cases were more prevalent among individuals over 41. In contrast, cases of ZIKV were concentrated around the 33-year age group. Intriguingly, females accounted for nearly 60% of the cases, suggesting a potential gender-based difference in infection rates. Interpretation Our findings underscore the complexity of arbovirus transmission and the need for interventions tailored to different geographical mesoregions. Enhanced surveillance and genomic sequencing will be essential for a deeper, more nuanced understanding of regional arbovirus dynamics. Identifying potential blind spots within the state will be pivotal for developing and implementing more effective public health strategies, specifically designed to address the unique challenges posed by these viruses throughout the state. Funding This study was supported by the National Institutes of Health USA grant U01 AI151698 for the United World Arbovirus Research Network (UWARN) and the CRP-ICGEB RESEARCH GRANT 2020 Project CRP/BRA20-03.
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Affiliation(s)
- Gabriel Schuab
- Universidade Federal do Rio de Janeiro, Duque de Caxias, Rio de Janeiro, Brazil
- Laboratório de Arbovírus e Vírus Hemorrágicos, Instituto Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Stephane Tosta
- Programa Interunidades de Pós-Graduação em Bioinformática, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Keldenn Moreno
- Programa Interunidades de Pós-Graduação em Bioinformática, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Vagner Fonseca
- Department of Exact and Earth Sciences, University of the State of Bahia, Salvador, Brazil
| | | | - Svetoslav Nanev Slavov
- Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Butantan Institute, São Paulo, Brazil
| | - Simone Kashima
- Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Massimo Ciccozzi
- Unit of Medical Statistics and Molecular Epidemiology, Università Campus Bio-Medico di Roma, Rome, Italy
| | - José Lourenço
- Universidade Católica Portuguesa, Faculdade de Medicina, Biomedical Research Center, Lisboa, Portugal
- Climate Amplified Diseases and Epidemics (CLIMADE), Portugal, Europe
| | - Eleonora Cella
- Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL, 32827, USA
| | - Carla de Oliveira
- Laboratório de Arbovírus e Vírus Hemorrágicos, Instituto Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | - Ana Maria Bispo de Filippis
- Laboratório de Arbovírus e Vírus Hemorrágicos, Instituto Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marta Giovanetti
- Department of Science and Technology for Humans and the Environment, University of Campus Bio-Medico di Roma, Rome, Italy
- Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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Scott VK, Pinheiro MSN, Machado MMT, Castro MC. Acceptability of a hypothetical dengue vaccine and the potential impact of dengue vaccination on personal vector control behavior: a qualitative study in Fortaleza, Brazil. BMC Public Health 2023; 23:2408. [PMID: 38049772 PMCID: PMC10694889 DOI: 10.1186/s12889-023-17005-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 10/17/2023] [Indexed: 12/06/2023] Open
Abstract
BACKGROUND Dengue is the most rapidly spreading viral vector-borne disease in the world. Promising new dengue vaccines have contributed to a growing consensus that effective dengue control will require integrated strategies of vaccination and vector control. In this qualitative study, we explored the perspectives of residents of Fortaleza, Brazil on acceptability of a hypothetical safe and effective dengue vaccine, specific drivers of dengue vaccine acceptance or hesitance, and the expected impact of dengue vaccination on their personal vector control practices. METHODS A total of 43 in-depth interviews were conducted from April to June 2022 with Fortaleza residents from a diverse range of educational and professional backgrounds, with and without recent personal experiences of symptomatic dengue infections. Data were analyzed using the principles of inductive grounded theory methodology. RESULTS Our findings indicate that knowledge of dengue transmission, symptoms, and prevention methods was strong across respondents. Respondents described willingness to accept a hypothetical dengue vaccine for themselves and their children, while emphasizing that the vaccine must be demonstrably safe and effective. Respondents expressed diverse perspectives on how receiving a safe and effective dengue vaccine might influence their personal vector control behaviors, relating these behaviors to their perception of risk from other Aedes mosquito-carried infections and beliefs about the role of vector control in maintaining household cleanliness. CONCLUSIONS Our study findings provide community-level perspectives on dengue vaccination and its potential impact on personal vector control behavior for policymakers and program managers in Fortaleza to consider as new dengue vaccines become available. With the introduction of any new dengue vaccine, community perspectives and emerging concerns that may drive vaccine hesitancy should be continuously sought out. Improved urban infrastructure and efforts to engage individuals and communities in vector control may be needed to optimize the impact of future dengue vaccinations and prevent rising cases of other arboviruses such as Zika and chikungunya.
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Affiliation(s)
- Valerie K Scott
- Department of Global Health and Population, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, 02115, Boston, MA, USA.
| | | | | | - Marcia C Castro
- Department of Global Health and Population, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, 02115, Boston, MA, USA
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Barbosa AL, Gois GC, Dos Santos VB, Pinto ATDM, de Castro Andrade BP, de Souza LB, Almeida E Sá FH, Virginio JF, Queiroz MAÁ. Effects of different diets on Aedes aegypti adults: improving rearing techniques for sterile insect technique. BULLETIN OF ENTOMOLOGICAL RESEARCH 2023; 113:748-755. [PMID: 37743777 DOI: 10.1017/s0007485323000408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
The aim was to evaluate the effect of different energy diets available in adulthood on the longevity, dispersal capacity and sexual performance of Aedes aegypti produced under a mass-rearing system. To evaluate the effects of diets in relation to the survival of the adult male insects of Ae. aegypti, six treatments were used: sucrose at a concentration of 10%, as a positive control (sack10); starvation, as a negative control (starvation); sucrose at a concentration of 20% associated with 1 g/l of ascorbic acid (sac20vitC); wild honey in a concentration of 10% (honey10); demerara sugar in a 10% concentration (demerara10); and sucrose at a concentration of 20% associated with 1 g/l of ascorbic acid and 0.5 g/l of amino acid proline (sac20vitCPr). Each treatment had 16 cages containing 50 adult males. For the tests of flight ability and propensity to copulation, five treatments were used (saca10; sac20vitC; mel10; demerara10; and sac20vitCPr), with males each for flight ability and females copulated by a single male for copulation propensity. The diet composed of sucrose at a concentration of 20% associated with ascorbic acid, as an antioxidant, improved the survival, flight ability and propensity to copulate in Ae. aegypti males under mass-rearing conditions, and may be useful to enhance the performance of sterile males, thus improving the success of sterile insect technique programmes.
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Castro MC, Trindade N, Chioro A, Temporão JG, Costa H, Padilha A, Massuda A. Restoring health priorities in Brazil. Science 2023; 380:142-143. [PMID: 37053329 DOI: 10.1126/science.adh1254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Affiliation(s)
- Marcia C Castro
- Department of Global Health and Population, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Nísia Trindade
- Ministério da Saúde, Governo Federal do Brasil, Brasília, DF 70058-900, Brazil
| | - Arthur Chioro
- Departamento de Medicina Preventiva, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP 04023-062, Brazil
| | - José Gomes Temporão
- Centro de Estudos Estratégicos, Fundação Oswaldo Cruz, Rio de Janeiro, RJ 21040-361, Brazil
| | - Humberto Costa
- Senado Federal, República Federativa do Brasil, Brasília, DF 70165-900, Brazil
| | - Alexandre Padilha
- Secretaria de Relações Institucionais da Presidência da República, Governo Federal do Brasil, Brasília, DF 70150-900, Brazil
| | - Adriano Massuda
- Departamento de Administração, Centro de Pesquisa e Planejamento em Saúde, Fundação Getúlio Vargas, Escola de Administração do Estado de São Paulo, São Paulo, SP 01313-902, Brazil
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Bergero P, Schaposnik LP, Wang G. Correlations between COVID-19 and dengue obtained via the study of South America, Africa and Southeast Asia during the 2020s. Sci Rep 2023; 13:1525. [PMID: 36707624 PMCID: PMC9880932 DOI: 10.1038/s41598-023-27983-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 01/11/2023] [Indexed: 01/29/2023] Open
Abstract
A dramatic increase in the number of outbreaks of dengue has recently been reported, and climate change is likely to extend the geographical spread of the disease. In this context, this paper shows how a neural network approach can incorporate dengue and COVID-19 data as well as external factors (such as social behaviour or climate variables), to develop predictive models that could improve our knowledge and provide useful tools for health policy makers. Through the use of neural networks with different social and natural parameters, in this paper we define a Correlation Model through which we show that the number of cases of COVID-19 and dengue have very similar trends. We then illustrate the relevance of our model by extending it to a Long short-term memory model (LSTM) that incorporates both diseases, and using this to estimate dengue infections via COVID-19 data in countries that lack sufficient dengue data.
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Affiliation(s)
- Paula Bergero
- Universidad Nacional de La Plata, CCT, La Plata, Argentina
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