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McGrath J, O'Doherty L, Conlon N, Dunne J, Brady G, Ibrahim A, McCormack W, Walsh C, Domegan L, Walsh S, Kenny C, Allen N, Fleming C, Bergin C. Point of care detection of SARS-CoV-2 antibodies and neutralisation capacity-lateral flow immunoassay evaluation compared to commercial assay to inform potential role in therapeutic and surveillance practices. Front Public Health 2023; 11:1245464. [PMID: 37841735 PMCID: PMC10569692 DOI: 10.3389/fpubh.2023.1245464] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 08/24/2023] [Indexed: 10/17/2023] Open
Abstract
Introduction As the COVID-19 pandemic moves towards endemic status, testing strategies are being de-escalated. A rapid and effective point of care test (POCT) assessment of SARS-CoV-2 immune responses can inform clinical decision-making and epidemiological monitoring of the disease. This cross-sectional seroprevalence study of anti-SARS-CoV-2 antibodies in Irish healthcare workers assessed how rapid anti-SARS-CoV-2 antibody testing can be compared to a standard laboratory assay, discusses its effectiveness in neutralisation assessment and its uses into the future of the pandemic. Methods A point of care lateral flow immunoassay (LFA) detecting anti-SARS-CoV-2 spike (S)-receptor binding domain (RBD) neutralising antibodies (Healgen SARS-CoV-2 neutralising Antibody Rapid Test Cassette) was compared to the Roche Elecsys/-S anti-SARS-CoV-2 antibody assays and an in vitro surrogate neutralisation assay. A correlation between anti-spike (S), anti-nucleocapsid (N) titres, and in vitro neutralisation was also assessed. Results 1,777 serology samples were tested using Roche Elecsys/-S anti-SARS-CoV-2 assays to detect total anti-N/S antibodies. 1,562 samples were tested using the POC LFA (including 50 negative controls), and 90 samples were tested using an in vitro ACE2-RBD binding inhibition surrogate neutralisation assay. The POCT demonstrated 97.7% sensitivity, 100% specificity, a positive predictive value (PPV) of 100%, and a negative predictive value (NPV) of 61% in comparison to the commercial assay. Anti-S antibody titres determined by the Roche assay stratified by the POC LFA result groups demonstrated statistically significant differences between the "Positive" and "Negative" LFA groups (p < 0.0001) and the "Weak Positive" and "Positive" LFA groups (p < 0.0001). No statistically significant difference in ACE2-RBD binding inhibition was demonstrated when stratified by the LFA POC results. A positive, statistically significant correlation was demonstrated between the in vitro pseudo-neutralisation assay results and anti-S antibody titres (rho 0.423, p < 0.001) and anti-N antibody titres (rho = 0.55, p < 0.0001). Conclusion High sensitivity, specificity, and PPV were demonstrated for the POC LFA for the detection of anti-S-RBD antibodies in comparison to the commercial assay. The LFA was not a reliable determinant of the neutralisation capacity of identified antibodies. POC LFA are useful tools in sero-epidemiology settings, pandemic preparedness and may act as supportive tools in treatment decisions through the rapid identification of anti-Spike antibodies.
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Affiliation(s)
- Jonathan McGrath
- Department of Genitourinary Medicine and Infectious Diseases (GUIDe), St. James's Hospital, Dublin, Ireland
| | - Laura O'Doherty
- Department of Genitourinary Medicine and Infectious Diseases (GUIDe), St. James's Hospital, Dublin, Ireland
| | - Niall Conlon
- Department of Immunology, St. James's Hospital, Dublin, Ireland
- Department of Clinical Medicine, Trinity College, Dublin, Ireland
| | - Jean Dunne
- Department of Immunology, St. James's Hospital, Dublin, Ireland
| | - Gareth Brady
- Trinity College, Trinity Health Kidney Centre, Trinity Translational Medicine Institute, St. James's Hospital, Dublin, Ireland
| | - Aya Ibrahim
- Department of Immunology, St. James's Hospital, Dublin, Ireland
- Department of Clinical Medicine, Trinity Translational Medicine Institute, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - William McCormack
- Department of Clinical Medicine, Trinity Translational Medicine Institute, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Cathal Walsh
- Health Protection Surveillance Centre (HPSC), Dublin, Ireland
| | - Lisa Domegan
- Health Protection Surveillance Centre (HPSC), Dublin, Ireland
| | | | - Claire Kenny
- Department of Infectious Diseases, University Hospital Galway, Galway, Ireland
| | - Niamh Allen
- Department of Genitourinary Medicine and Infectious Diseases (GUIDe), St. James's Hospital, Dublin, Ireland
| | - Catherine Fleming
- Department of Infectious Diseases, University Hospital Galway, Galway, Ireland
| | - Colm Bergin
- Department of Genitourinary Medicine and Infectious Diseases (GUIDe), St. James's Hospital, Dublin, Ireland
- Department of Clinical Medicine, Trinity College, Dublin, Ireland
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Zhou Y, Zhao B, Shi W, Ding X, Shen L, Zhou X, He H. The infection rates of HBV and HCV decreased significantly in Zhejiang Province, China: A comparative study based on the data of two sero-epidemiological surveys in 1992 and 2020. J Viral Hepat 2023; 30:489-496. [PMID: 36807422 DOI: 10.1111/jvh.13820] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/13/2023] [Accepted: 02/15/2023] [Indexed: 02/23/2023]
Abstract
In 2020, China conducted a nationwide, sero-epidemiological, cross-sectional survey of viral hepatitis. The stratified multi-stage cluster random sampling method was used to select the permanent population aged 1-69 years, followed by questionnaire survey and sample collection and detection of the serological markers of hepatitis B (HBV) and hepatitis C viruses (HCV). A total of 4747 individuals aged 1-69 years were investigated in Zhejiang Province. The positive rates of hepatitis B surface antigen and anti-HCV were 4.3% and 0%, respectively. Compared to a similar sero-epidemiological survey in 1992, the 2020 survey showed that the HBV infection rate in Zhejiang Province decreased by 56.5%. In both surveys, HBV infection rate increased with age (in 1992, χ2 = 185.866, p = .000; in 2020, χ2 = 1383.836, p = .000). Compared with 1992, the positive anti-HCV rate in those aged 1-69 years in 2020 decreased by 100.0%. This result showed that the HBV vaccine and blood screening to prevent HBV and HCV infection significantly decreased the infection rate of HBV and HCV in the younger generation of Zhejiang province. However, the rate of HBV carriers aged 30-69 years was still high, which underscores the need to strengthen the management and treatment of chronic HBV infection. Hence, Zhejiang province can eliminate the public health threat of viral hepatitis.
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Affiliation(s)
- Yang Zhou
- Department of Immunization Program, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Botao Zhao
- School of Public Health, Xiamen University, Xiamen, China
| | - Wen Shi
- Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Xiaobei Ding
- Department of AIDS and STD Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Liping Shen
- Department of Viral Hepatitis, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China
| | - Xin Zhou
- Department of AIDS and STD Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Hanqing He
- Department of Immunization Program, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
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Woudenberg T, Pinaud L, Garcia L, Tondeur L, Pelleau S, De Thoisy A, Donnadieu F, Backovic M, Attia M, Hozé N, Duru C, Koffi AD, Castelain S, Ungeheuer MN, Fernandes Pellerin S, Planas D, Bruel T, Cauchemez S, Schwartz O, Fontanet A, White M. Estimated protection against COVID-19 based on predicted neutralisation titres from multiple antibody measurements in a longitudinal cohort, France, April 2020 to November 2021. Euro Surveill 2023; 28:2200681. [PMID: 37347417 PMCID: PMC10288827 DOI: 10.2807/1560-7917.es.2023.28.25.2200681] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 03/28/2023] [Indexed: 06/23/2023] Open
Abstract
BackgroundThe risk of SARS-CoV-2 (re-)infection remains present given waning of vaccine-induced and infection-acquired immunity, and ongoing circulation of new variants.AimTo develop a method that predicts virus neutralisation and disease protection based on variant-specific antibody measurements to SARS-CoV-2 antigens.MethodsTo correlate antibody and neutralisation titres, we collected 304 serum samples from individuals with either vaccine-induced or infection-acquired SARS-CoV-2 immunity. Using the association between antibody and neutralisation titres, we developed a prediction model for SARS-CoV-2-specific neutralisation titres. From predicted neutralising titres, we inferred protection estimates to symptomatic and severe COVID-19 using previously described relationships between neutralisation titres and protection estimates. We estimated population immunity in a French longitudinal cohort of 905 individuals followed from April 2020 to November 2021.ResultsWe demonstrated a strong correlation between anti-SARS-CoV-2 antibodies measured using a low cost high-throughput assay and antibody response capacity to neutralise live virus. Participants with a single vaccination or immunity caused by infection were especially vulnerable to symptomatic or severe COVID-19. While the median reduced risk of COVID-19 from Delta variant infection in participants with three vaccinations was 96% (IQR: 94-98), median reduced risk among participants with infection-acquired immunity was only 42% (IQR: 22-66).ConclusionOur results are consistent with data from vaccine effectiveness studies, indicating the robustness of our approach. Our multiplex serological assay can be readily adapted to study new variants and provides a framework for development of an assay that would include protection estimates.
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Affiliation(s)
- Tom Woudenberg
- Infectious Disease Epidemiology and Analytics G5 Unit, Department of Global Health, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Laurie Pinaud
- Emerging Diseases Epidemiology Unit, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Laura Garcia
- Infectious Disease Epidemiology and Analytics G5 Unit, Department of Global Health, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Laura Tondeur
- Emerging Diseases Epidemiology Unit, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Stéphane Pelleau
- Infectious Disease Epidemiology and Analytics G5 Unit, Department of Global Health, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Alix De Thoisy
- Infectious Disease Epidemiology and Analytics G5 Unit, Department of Global Health, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Françoise Donnadieu
- Infectious Disease Epidemiology and Analytics G5 Unit, Department of Global Health, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Marija Backovic
- Structural Virology Unit, Department of Virology and CNRS UMR 3569, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Mikaël Attia
- Molecular Genetics of RNA Viruses, Department of Virology, Institut Pasteur, Université Paris-Cité, CNRS UMR 3569, Paris, France
| | - Nathanael Hozé
- Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, Université Paris-Cité, UMR2000, CNRS, Paris, France
| | - Cécile Duru
- Hôpital de Crépy-en-Valois, Crépy-en-Valois, France
| | | | | | - Marie-Noelle Ungeheuer
- Clinical Investigation and Access to Research Bioresources (ICAReB) platform, Center for Translational Science, Institut Pasteur, Paris, France
| | | | - Delphine Planas
- Virus and Immunity Unit, Department of Virology, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Timothée Bruel
- Virus and Immunity Unit, Department of Virology, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Simon Cauchemez
- Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, Université Paris-Cité, UMR2000, CNRS, Paris, France
| | - Olivier Schwartz
- Virus and Immunity Unit, Department of Virology, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Arnaud Fontanet
- PACRI Unit, Conservatoire National des Arts et Métiers, Paris, France
- Emerging Diseases Epidemiology Unit, Institut Pasteur, Université Paris-Cité, Paris, France
| | - Michael White
- Infectious Disease Epidemiology and Analytics G5 Unit, Department of Global Health, Institut Pasteur, Université Paris-Cité, Paris, France
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Ullah M, Li Y, Munib K, Rahman HU, Zhang Z. Sero-Epidemiology and Associated Risk Factors of Foot-and-Mouth Disease (FMD) in the Northern Border Regions of Pakistan. Vet Sci 2023; 10:vetsci10050356. [PMID: 37235439 DOI: 10.3390/vetsci10050356] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/24/2023] [Accepted: 04/19/2023] [Indexed: 05/28/2023] Open
Abstract
The present cross-sectional survey was carried out to investigate the distribution and risk factors of FMD in Pakistan's northern border regions. About 385 serum samples were compiled from small ruminants (239) and large ruminants (146) and tested using 3ABC-Mab-bELISA. An overall apparent seroprevalence of 67.0% was documented. The highest seroprevalence of 81.1% was reported in the Swat, followed by 76.6% in Mohmand, 72.7% in Gilgit, 65.6% in Shangla, 63.4% in Bajaur, 46.6% in Chitral and lowest 46.5% in Khyber region. Statistically significant variations in seroprevalence of 51.5%, 71.8%, 58.3%, and 74.4% were recorded in sheep, goats, cattle, and buffaloes, respectively. From the different risk factors investigated, age, sex, species of animal, seasons, flock/herd size, farming methods, outbreak location, and nomadic animal movement were found to be significantly associated (p < 0.05) with the seroprevalence of FMD. It was concluded that proper epidemiological study, risk-based FMD surveillance in small ruminants, vaccination strategy, control measures for transboundary animal movement, collaborations, and awareness programs need to be practiced in the study regions to investigate the newly circulating virus strains in large and small ruminants and associated factors for the wide seroprevalence to plan proper control policies to bound the consequence of FMD in the region.
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Affiliation(s)
- Munib Ullah
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730030, China
- Department of Clinical Studies, Faculty of Veterinary and Animal Sciences, PMAS-Arid Agriculture University Rawalpindi, Rawalpindi 10370, Pakistan
| | - Yanmin Li
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu 610041, China
| | - Kainat Munib
- Department of Sociology, Allama Iqbal Open University Islamabad, Islamabad 44310, Pakistan
| | - Hanif Ur Rahman
- Virology Section, Centre of Microbiology and Biotechnology (CMB), Veterinary Research Institute Peshawar, Peshawar 25130, Pakistan
| | - Zhidong Zhang
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu 610041, China
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Gabutti G, Grassi T, Bagordo F, Savio M, Rota MC, Castiglia P, Baldovin T, Napolitano F, Panico A, Ogliastro M, Trombetta CM, Ditommaso S, Tramuto F. Sero-Epidemiological Study of Varicella in the Italian General Population. Vaccines (Basel) 2023; 11:vaccines11020306. [PMID: 36851184 PMCID: PMC9967034 DOI: 10.3390/vaccines11020306] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/19/2023] [Accepted: 01/22/2023] [Indexed: 01/31/2023] Open
Abstract
The aim of this study was to analyze the seroprevalence of varicella in Italy and to evaluate the impact of varicella vaccination, which has been mandatory for newborns since 2017. The levels of VZV-specific IgG antibodies were determined by the ELISA method in residual serum samples obtained from subjects aged between 6 and 64 years and residing in 13 Italian regions. Overall, 3746 serum samples were collected in the years 2019 and 2020. The overall seroprevalence was 91.6% (89.9% in males and 93.3% in females; p = 0.0002). Seroprevalence showed an increasing trend (p < 0.0001) starting in the younger age groups: 6-9 years: 84.1%; 10-14 years: 88.7%; 15-19 years: 89.3%; 20-39 years: 93.1% and >40 years: 97.0%. The seroprevalence data obtained in the present study were compared with those relating to previous sero-epidemiological surveys conducted, respectively, in the years 1996-1997, 2003-2004 and 2013-2014, taking into consideration only data from regions monitored in all surveillance campaigns. The comparison highlighted for the period 2019-2020 showed significantly higher values in the age groups 6-9 (p < 0.001), 10-14 (p = 0.018) and 15-19 years (p = 0.035), while in adults, the trend did not change over time (ns). These results highlight the positive impact of varicella vaccination in Italy.
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Affiliation(s)
- Giovanni Gabutti
- National Coordinator of the Working Group “Vaccines and Immunization Policies”, Italian Society of Hygiene, Preventive Medicine and Public Health, 16030 Cogorno, Italy
- Correspondence: ; Tel.: +39-347-8889342
| | - Tiziana Grassi
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy
| | - Francesco Bagordo
- Department of Pharmacy-Pharmaceutical Sciences, University of Bari “Aldo Moro”, 70121 Bari, Italy
| | - Marta Savio
- Post-Graduate School of Hygiene and Preventive Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Maria Cristina Rota
- Department of Infectious Diseases, Italian Institute of Health (ISS), 00161 Roma, Italy
| | - Paolo Castiglia
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy
| | - Tatjana Baldovin
- Hygiene and Public Health Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, 35131 Padua, Italy
| | - Francesco Napolitano
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Alessandra Panico
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy
| | - Matilde Ogliastro
- Department of Health Sciences, University of Genova, 16126 Genova, Italy
| | | | - Savina Ditommaso
- Department of Sciences of Public Health and Pediatrics, University of Turin, 10126 Turin, Italy
| | - Fabio Tramuto
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, 90133 Palermo, Italy
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da Costa VG, Saivish MV, Lino NAB, Bittar C, de Freitas Calmon M, Nogueira ML, Rahal P. Clinical Landscape and Rate of Exposure to Ilheus Virus: Insights from Systematic Review and Meta-Analysis. Viruses 2022; 15:92. [PMID: 36680131 PMCID: PMC9861323 DOI: 10.3390/v15010092] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/14/2022] [Accepted: 12/24/2022] [Indexed: 12/30/2022] Open
Abstract
Ilheus fever is a mosquito-borne, poorly known tropical disease. We aimed to report the pooled rate of exposure to the Ilheus virus (ILHV) and clinical outcomes of infection to determine the epidemiological patterns of ILHV. We conducted a meta-analysis of 37 studies (n = 17,722 individuals) from Latin America. The common clinical characteristics of ILHV infection were fever (82.3%), headache (52.9%), and myalgia (52.9%). Encephalitis complicated the course of the infection in 29.4% cases. Monotypic serological reactions detected a pooled rate of exposure of 2% to ILHV (95% CI: 1-2). Studies were mainly conducted in Brazil, with a pooled proportion of ILHV positivity of 8% (95% CI: 3-14). Males (12%) had higher rates of seropositivity than females (7%) and had high chances of ILHV infection (OR: 1.7, 95% CI: 1.2-2.5). Seropositivity increased with age, from 2% (95% CI: 2-3) among people aged 0-14 years to 8% (95% CI: 6-10) among people aged 15-64 years. Our analysis indicated a low and relatively constant burden of ILHV in Latin America. More research is needed to evaluate and innovate serological assays for ILHV to better estimate the burden and dynamics of epidemiological changes in ILHV infection in different regions.
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Affiliation(s)
- Vivaldo Gomes da Costa
- Laboratório de Estudos Genômicos, Departamento de Biologia, Instituto de Biociências Letras e Ciências Exatas (IBILCE), Universidade Estadual Paulista (UNESP), São José do Rio Preto 15054-000, Brazil
| | - Marielena Vogel Saivish
- Laboratório de Pesquisas em Virologia, Departamento de Doenças Dermatológicas, Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto (FAMERP), São José do Rio Preto 15090-000, Brazil
| | - Nikolas Alexander Borsato Lino
- Laboratório de Estudos Genômicos, Departamento de Biologia, Instituto de Biociências Letras e Ciências Exatas (IBILCE), Universidade Estadual Paulista (UNESP), São José do Rio Preto 15054-000, Brazil
| | - Cíntia Bittar
- Laboratório de Estudos Genômicos, Departamento de Biologia, Instituto de Biociências Letras e Ciências Exatas (IBILCE), Universidade Estadual Paulista (UNESP), São José do Rio Preto 15054-000, Brazil
| | - Marília de Freitas Calmon
- Laboratório de Estudos Genômicos, Departamento de Biologia, Instituto de Biociências Letras e Ciências Exatas (IBILCE), Universidade Estadual Paulista (UNESP), São José do Rio Preto 15054-000, Brazil
| | - Maurício Lacerda Nogueira
- Laboratório de Pesquisas em Virologia, Departamento de Doenças Dermatológicas, Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto (FAMERP), São José do Rio Preto 15090-000, Brazil
| | - Paula Rahal
- Laboratório de Estudos Genômicos, Departamento de Biologia, Instituto de Biociências Letras e Ciências Exatas (IBILCE), Universidade Estadual Paulista (UNESP), São José do Rio Preto 15054-000, Brazil
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Grassi T, Bagordo F, Savio M, Rota MC, Vitale F, Arghittu A, Sticchi L, Gabutti G. Sero-Epidemiological Study of Bordetella pertussis Infection in the Italian General Population. Vaccines (Basel) 2022; 10:vaccines10122130. [PMID: 36560541 PMCID: PMC9782223 DOI: 10.3390/vaccines10122130] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/01/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022] Open
Abstract
A multicenter study was conducted to estimate the prevalence of pertussis IgG antibodies (anti-PTx) in the Italian population. Serum samples (4154) collected in the years 2019−2020 from subjects aged 6 to 90 years were tested. The anti-PTx IgG levels were determined by ELISA test. The limit of detection was 5 IU/mL (International Units per milliliter); values ≥ 40 IU/mL and ≥100 IU/mL indicate an infection that has occurred in recent years and a recent infection (occurred during the last year), respectively. The mean concentration of anti-PTx IgG antibodies in the tested samples was 13 IU/mL; 1.0% of subjects had a titer ≥ 100 IU/mL, 5.3% a titer between 40 and 100 IU/mL, and 38.9% a titer < 5 IU/mL. The mean antibody concentration was significantly higher in males than in females. The age group 25−39 years had the lowest percentage of negative subjects (36.9%) and the highest prevalence of subjects with antibody titers ≥ 100 IU/mL (1.3%). In the age group ≥ 65 years, the prevalence of subjects with titers between 40 and 100 IU/mL (6.7%) and the percentage of negative subjects (44.8%) was higher than in the other age groups. The results highlight the possible role of adolescents and adults in the transmission of B. pertussis.
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Affiliation(s)
- Tiziana Grassi
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy
| | - Francesco Bagordo
- Department of Pharmacy-Pharmaceutical Sciences, University of Bari, 70121 Bari, Italy
| | - Marta Savio
- Post-Graduate School of Hygiene and Preventive Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Maria Cristina Rota
- Department of Infectious Diseases, Italian Institute of Health (ISS), 00161 Roma, Italy
| | - Francesco Vitale
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, 90127 Palermo, Italy
| | - Antonella Arghittu
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy
| | - Laura Sticchi
- Department of Health Sciences, University of Genova, 16132 Genova, Italy
| | - Giovanni Gabutti
- National Coordinator of the Working Group “Vaccines and Immunization Policies”, Italian Society of Hygiene, Preventive Medicine and Public Health, 16030 Cogorno, Italy
- Correspondence: ; Tel.: +39-347-8889342
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Muema J, Oboge H, Mutono N, Makori A, Oyugi J, Bukania Z, Njuguna J, Jost C, Ogoti B, Omulo S, Thumbi SM. Sero - epidemiology of brucellosis in people and their livestock: A linked human - animal cross-sectional study in a pastoralist community in Kenya. Front Vet Sci 2022; 9:1031639. [PMID: 36467641 PMCID: PMC9716101 DOI: 10.3389/fvets.2022.1031639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/03/2022] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND Brucellosis is associated with massive livestock production losses and human morbidity worldwide. Efforts to control brucellosis among pastoralist communities are limited by scarce data on the prevalence and risk factors for exposure despite the high human-animal interactions in these communities. This study simultaneously assessed the seroprevalence of brucellosis and associated factors of exposure among pastoralists and their livestock in same households. METHODS We conducted a cross-sectional study in pastoralist communities in Marsabit County - Kenya. A total of 1,074 women and 225 children participated and provided blood samples. Blood was also drawn from 1,876 goats, 322 sheep and 189 camels. Blood samples were collected to be screened for the presence of anti-Brucella IgG antibodies using indirect IgG Enzyme-Linked Immunosorbent Assay (ELISA) kits. Further, Individual, household and herd-level epidemiological information were captured using a structured questionnaire. Group differences were compared using the Pearson's Chi-square test, and p-values < 0.05 considered statistically significant. Generalized mixed-effects multivariable logistic human and animal models using administrative ward as the random effect was used to determine variables correlated to the outcome. RESULTS Household-level seropositivity was 12.7% (95% CI: 10.7-14.8). The individual human seroprevalence was 10.8% (9.1-12.6) with higher seroprevalence among women than children (12.4 vs. 3.1%, p < 0.001). Herd-level seroprevalence was 26.1% (23.7-28.7) and 19.2% (17.6-20.8) among individual animals. Goats had the highest seroprevalence 23.1% (21.2 - 25.1), followed by sheep 6.8% (4.3-10.2) and camels 1.1% (0.1-3.8). Goats and sheep had a higher risk of exposure OR = 3.8 (95% CI 2.4-6.7, p < 0.001) and 2.8 (1.2-5.6, p < 0.007), respectively relative to camels. Human and animal seroprevalence were significantly associated (OR = 1.8, [95%CI: 1.23-2.58], p = 0.002). Herd seroprevalence varied by household head education (OR = 2.45, [1.67-3.61, p < 0.001]) and herd size (1.01, [1.00-1.01], p < 0.001). CONCLUSIONS The current study showed evidence that brucellosis is endemic in this pastoralist setting and there is a significant association between animal and human brucellosis seropositivity at household level representing a potential occupational risk. Public health sensitization and sustained human and animal brucellosis screening are required.
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Affiliation(s)
- Josphat Muema
- Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya
- Washington State University Global Health Program - Kenya, Nairobi, Kenya
- Feed the Future Innovation Lab for Animal Health, Washington State University, Pullman, WA, United States
| | - Harriet Oboge
- Washington State University Global Health Program - Kenya, Nairobi, Kenya
- Feed the Future Innovation Lab for Animal Health, Washington State University, Pullman, WA, United States
| | - Nyamai Mutono
- Washington State University Global Health Program - Kenya, Nairobi, Kenya
- Feed the Future Innovation Lab for Animal Health, Washington State University, Pullman, WA, United States
- Centre for Epidemiological Modeling and Analysis, University of Nairobi, Nairobi, Kenya
| | - Anita Makori
- Washington State University Global Health Program - Kenya, Nairobi, Kenya
- Centre for Epidemiological Modeling and Analysis, University of Nairobi, Nairobi, Kenya
| | - Julius Oyugi
- Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya
| | - Zipporah Bukania
- Center for Public Health Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Joseph Njuguna
- Food and Agriculture Organization of the United Nations, Nairobi, Kenya
| | - Christine Jost
- United States Agency for International Development's Bureau for Humanitarian Assistance (USAID/BHA), Washington, DC, United States
- Global Health Support Initiative III, Social Solutions International, Washington, DC, United States
| | - Brian Ogoti
- Washington State University Global Health Program - Kenya, Nairobi, Kenya
- Centre for Epidemiological Modeling and Analysis, University of Nairobi, Nairobi, Kenya
| | - Sylvia Omulo
- Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya
- Washington State University Global Health Program - Kenya, Nairobi, Kenya
- Paul G. Allen School for Global Health, Washington State University, Pullman, WA, United States
| | - S. M. Thumbi
- Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya
- Feed the Future Innovation Lab for Animal Health, Washington State University, Pullman, WA, United States
- Paul G. Allen School for Global Health, Washington State University, Pullman, WA, United States
- South African Center for Epidemiological Modeling Analysis, Stellenbosch, South Africa
- Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, United Kingdom
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Cooper DJ, Lear S, Watson L, Shaw A, Ferris M, Doffinger R, Bousfield R, Sharrocks K, Weekes MP, Warne B, Sparkes D, Jones NK, Rivett L, Routledge M, Chaudhry A, Dempsey K, Matson M, Lakha A, Gathercole G, O'Connor O, Wilson E, Shahzad O, Toms K, Thompson R, Halsall I, Halsall D, Houghton S, Papadia S, Kingston N, Stirrups KE, Graves B, Townsend P, Walker N, Stark H, De Angelis D, Seaman S, Dougan G, Bradley JR, Török ME, Goodfellow I, Baker S. A prospective study of risk factors associated with seroprevalence of SARS-CoV-2 antibodies in healthcare workers at a large UK teaching hospital. J Infect 2022; 85:557-564. [PMID: 36058413 PMCID: PMC9436870 DOI: 10.1016/j.jinf.2022.08.030] [Citation(s) in RCA: 6] [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: 12/09/2020] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022]
Abstract
OBJECTIVES To describe the risk factors for SARS-CoV-2 infection in UK healthcare workers (HCWs). METHODS We conducted a prospective sero-epidemiological study of HCWs at a major UK teaching hospital using a SARS-CoV-2 immunoassay. Risk factors for seropositivity were analysed using multivariate logistic regression. RESULTS 410/5,698 (7·2%) staff tested positive for SARS-CoV-2 antibodies. Seroprevalence was higher in those working in designated COVID-19 areas compared with other areas (9·47% versus 6·16%) Healthcare assistants (aOR 2·06 [95%CI 1·14-3·71]; p=0·016) and domestic and portering staff (aOR 3·45 [95% CI 1·07-11·42]; p=0·039) had significantly higher seroprevalence than other staff groups after adjusting for age, sex, ethnicity and COVID-19 working location. Staff working in acute medicine and medical sub-specialities were also at higher risk (aOR 2·07 [95% CI 1·31-3·25]; p<0·002). Staff from Black, Asian and minority ethnic (BAME) backgrounds had an aOR of 1·65 (95% CI 1·32 - 2·07; p<0·001) compared to white staff; this increased risk was independent of COVID-19 area working. The only symptoms significantly associated with seropositivity in a multivariable model were loss of sense of taste or smell, fever, and myalgia; 31% of staff testing positive reported no prior symptoms. CONCLUSIONS Risk of SARS-CoV-2 infection amongst HCWs is highly heterogeneous and influenced by COVID-19 working location, role, age and ethnicity. Increased risk amongst BAME staff cannot be accounted for solely by occupational factors.
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Affiliation(s)
- Daniel J Cooper
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK; Global and Tropical Health Division, Menzies School of Heath Research and Charles Darwin University, Darwin, Northern Territory, Australia; Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, UK.
| | - Sara Lear
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | | | - Ashley Shaw
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Mark Ferris
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Rainer Doffinger
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Rachel Bousfield
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | | | - Michael P Weekes
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Ben Warne
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Dominic Sparkes
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK; Clinical Microbiology and Public Health Laboratory, Public Health England, United Kingdom
| | - Nick K Jones
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK; Clinical Microbiology and Public Health Laboratory, Public Health England, United Kingdom
| | - Lucy Rivett
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK; Clinical Microbiology and Public Health Laboratory, Public Health England, United Kingdom
| | - Matthew Routledge
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK; Clinical Microbiology and Public Health Laboratory, Public Health England, United Kingdom
| | - Afzal Chaudhry
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | | | | | - Adil Lakha
- University of Cambridge School of Clinical Medicine, Cambridge, UK
| | | | - Olivia O'Connor
- University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Emily Wilson
- University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Orthi Shahzad
- University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Kieran Toms
- University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Rachel Thompson
- University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Ian Halsall
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - David Halsall
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Sally Houghton
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Sofia Papadia
- NIHR BioResource, NIHR Cambridge Biomedical Research Centre, Cambridge Biomedical Campus, Cambridge, UK; Department of Public Health and Primary Care, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Nathalie Kingston
- NIHR BioResource, NIHR Cambridge Biomedical Research Centre, Cambridge Biomedical Campus, Cambridge, UK; Department of Haematology, School of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Kathleen E Stirrups
- NIHR BioResource, NIHR Cambridge Biomedical Research Centre, Cambridge Biomedical Campus, Cambridge, UK; Department of Haematology, School of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Barbara Graves
- NIHR BioResource, NIHR Cambridge Biomedical Research Centre, Cambridge Biomedical Campus, Cambridge, UK; Department of Public Health and Primary Care, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Paul Townsend
- NIHR BioResource, NIHR Cambridge Biomedical Research Centre, Cambridge Biomedical Campus, Cambridge, UK
| | - Neil Walker
- NIHR BioResource, NIHR Cambridge Biomedical Research Centre, Cambridge Biomedical Campus, Cambridge, UK; Department of Haematology, School of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Hannah Stark
- NIHR BioResource, NIHR Cambridge Biomedical Research Centre, Cambridge Biomedical Campus, Cambridge, UK; Department of Public Health and Primary Care, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | | | - Shaun Seaman
- MRC Biostatistics Unit, University of Cambridge, Cambridge, UK
| | - Gordon Dougan
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, UK; Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, UK
| | - John R Bradley
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK; NIHR BioResource, NIHR Cambridge Biomedical Research Centre, Cambridge Biomedical Campus, Cambridge, UK
| | - M Estée Török
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK; Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, UK
| | - Ian Goodfellow
- Department of pathology, Division of virology, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Stephen Baker
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, UK; Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, UK
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10
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Xin S, Jiang N, Yang L, Zhu N, Huang W, Li J, Zhang L, Su C, Yang Y. Isolation, genotyping and virulence determination of a Toxoplasma gondii strain from non-human primate from China. Transbound Emerg Dis 2022; 69:919-925. [PMID: 33619895 DOI: 10.1111/tbed.14047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 12/28/2020] [Revised: 02/20/2021] [Accepted: 02/20/2021] [Indexed: 01/17/2023]
Abstract
Toxoplasma gondii infects almost all warm-blooded animals, including humans and non-human primates. Many cases of T. gondii infection in non-human primates have been reported worldwide. In this study, 15 monkeys were collected from zoos in Henan Province between 2016 and 2019. A modified agglutination test (MAT) (cut-off: 1:8) showed that 46.7% (7/15) of the heart juices had T. gondii IgG antibody transformation. One viable T. gondii strain was successfully isolated from the myocardium of a rhesus monkey by bioassay in mice. This strain was designated as TgMonkeyCHn1. The DNA of T. gondii tachyzoites was obtained using cell cultures, and the genotype of this strain was determined by PCR-RFLP with 10 markers and the virulence genes ROP5 and ROP18. The genotype and ROP18/ROP5 (3/6) of TgMonkeyCHn1 did not match any known genotypes. In addition, the TgMonkeyCHn1 formed low number of tissue cysts and was non-lethal to mice. To our knowledge, this is the first T. gondii strain isolated from Old World monkeys. Rhesus monkey is a new host record for T. gondii.
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Affiliation(s)
- Shilin Xin
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Nan Jiang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Liulu Yang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Niuping Zhu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Wei Huang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | | | - Longxian Zhang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Chunlei Su
- University of Tennessee, Knoxville, TN, USA
| | - Yurong Yang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
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11
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Woudenberg T, Pelleau S, Anna F, Attia M, Donnadieu F, Gravet A, Lohmann C, Seraphin H, Guiheneuf R, Delamare C, Stefic K, Marlet J, Brochot E, Castelain S, Augereau O, Sibilia J, Dubos F, Meddour D, Guen CGL, Coste-Burel M, Imbert-Marcille BM, Chauvire-Drouard A, Schweitzer C, Gatin A, Lomazzi S, Joulié A, Haas H, Cantais A, Bertholon F, Chinazzo-Vigouroux MF, Abdallah MS, Arowas L, Charneau P, Hoen B, Demeret C, Werf SVD, Fontanet A, White M. Humoral immunity to SARS-CoV-2 and seasonal coronaviruses in children and adults in north-eastern France. EBioMedicine 2021; 70:103495. [PMID: 34304047 PMCID: PMC8299153 DOI: 10.1016/j.ebiom.2021.103495] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [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: 04/26/2021] [Revised: 06/25/2021] [Accepted: 07/05/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Children are underrepresented in the COVID-19 pandemic and often experience milder disease than adolescents and adults. Reduced severity is possibly due to recent and more frequent seasonal human coronaviruses (HCoV) infections. We assessed the seroprevalence of SARS-CoV-2 and seasonal HCoV specific antibodies in a large cohort in north-eastern France. METHODS In this cross-sectional seroprevalence study, serum samples were collected from children and adults requiring hospital admission for non-COVID-19 between February and August 2020. Antibody responses to SARS-CoV-2 and seasonal HCoV (229E, HKU1, NL63, OC43) were assessed using a bead-based multiplex assay, Luciferase-Linked ImmunoSorbent Assay, and a pseudotype neutralisation assay. FINDINGS In 2,408 individuals, seroprevalence of SARS-CoV-2-specific antibodies was 7-8% with three different immunoassays. Antibody levels to seasonal HCoV increased substantially up to the age of 10. Antibody responses in SARS-CoV-2 seropositive individuals were lowest in adults 18-30 years. In SARS-CoV-2 seronegative individuals, we observed cross-reactivity between antibodies to the four HCoV and SARS-CoV-2 Spike. In contrast to other antibodies to SARS-CoV-2, specific antibodies to sub-unit 2 of Spike (S2) in seronegative samples were highest in children. Upon infection with SARS-CoV-2, antibody levels to Spike of betacoronavirus OC43 increased across the whole age spectrum. No SARS-CoV-2 seropositive individuals with low levels of antibodies to seasonal HCoV were observed. INTERPRETATION Our findings underline significant cross-reactivity between antibodies to SARS-CoV-2 and seasonal HCoV, but provide no significant evidence for cross-protective immunity to SARS-CoV-2 infection due to a recent seasonal HCoV infection. In particular, across all age groups we did not observe SARS-CoV-2 infected individuals with low levels of antibodies to seasonal HCoV. FUNDING This work was supported by the « URGENCE COVID-19 » fundraising campaign of Institut Pasteur, by the French Government's Investissement d'Avenir program, Laboratoire d'Excellence Integrative Biology of Emerging Infectious Diseases (Grant No. ANR-10-LABX-62-IBEID), and by the REACTing (Research & Action Emerging Infectious Diseases), and by the RECOVER project funded by the European Union's Horizon 2020 research and innovation programme under grant agreement No. 101003589, and by a grant from LabEx IBEID (ANR-10-LABX-62-IBEID).
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Affiliation(s)
- Tom Woudenberg
- Infectious Disease Epidemiology and Analytics Unit, Department of Global Health, Institut Pasteur, Paris, France; Malaria: Parasites and Hosts Unit, Department of Parasites and Insect Vectors, Institut Pasteur, Paris, France.
| | - Stéphane Pelleau
- Infectious Disease Epidemiology and Analytics Unit, Department of Global Health, Institut Pasteur, Paris, France; Malaria: Parasites and Hosts Unit, Department of Parasites and Insect Vectors, Institut Pasteur, Paris, France
| | - François Anna
- Molecular Virology and Vaccinoloy Unit, Department of Virology, Institut Pasteur, Paris, France
| | - Mikael Attia
- Molecular Genetics of RNA Viruses, Department of Virology, Institut Pasteur, CNRS UMR 3569, Paris, France
| | - Françoise Donnadieu
- Infectious Disease Epidemiology and Analytics Unit, Department of Global Health, Institut Pasteur, Paris, France; Malaria: Parasites and Hosts Unit, Department of Parasites and Insect Vectors, Institut Pasteur, Paris, France
| | - Alain Gravet
- Laboratoire de Microbiologie, Groupement Hospitalier Régional de Mulhouse et Sud-Alsace, Mulhouse, France
| | - Caroline Lohmann
- Laboratoire de Microbiologie, Groupement Hospitalier Régional de Mulhouse et Sud-Alsace, Mulhouse, France
| | - Hélène Seraphin
- Centre Hospitalier Simone Veil de Beauvais, Beauvais, France
| | | | | | - Karl Stefic
- Service de Bactériologie-Virologie, Hôpital Bretonneau, CHRU de Tours, Tours, France
| | - Julien Marlet
- Service de Bactériologie-Virologie, Hôpital Bretonneau, CHRU de Tours, Tours, France
| | - Etienne Brochot
- Service de Virologie, CHU Amiens Picardie, UR 4294 AGIR UPJV, Amiens, France
| | - Sandrine Castelain
- Service de Virologie, CHU Amiens Picardie, UR 4294 AGIR UPJV, Amiens, France
| | - Olivier Augereau
- Service de Microbiologie, Hôpitaux Civils de Colmar, Colmar, France
| | - Jean Sibilia
- Laboratoire de Virologie, CHU de Strasbourg, Strasbourg, France
| | - François Dubos
- Univ. Lille, CHU Lille, Urgences pédiatriques et maladies infectieuses, Lille, France
| | - Damia Meddour
- Univ. Lille, CHU Lille, Urgences pédiatriques et maladies infectieuses, Lille, France
| | - Christèle Gras-Le Guen
- Urgences Pédiatrique et Pédiatrie Générale Hopital Mère Enfant CHU de Nantes, Nantes, France
| | | | | | | | - Cyril Schweitzer
- Hôpital d'Enfants, CHRU de Nancy, Vandoeuvre-Les-Nancy, France; EA 3450, DevAH, Université de Lorraine, Vandoeuvre Lès Nancy, France
| | - Amélie Gatin
- Pediatric Emergency Unit, Hôpital d'enfants, CHRU Nancy
| | | | - Aline Joulié
- Urgences pédiatriques et pédiatrie générale, hôpitaux pédiatriques CHU Lenval, Nice
| | - Hervé Haas
- Urgences pédiatriques et pédiatrie générale, hôpitaux pédiatriques CHU Lenval, Nice
| | - Aymeric Cantais
- Pediatric Emergency Department, Hospital University of St Etienne, France
| | | | | | | | - Laurence Arowas
- Investigation Clinique et Accès aux Ressources Biologiques (ICAReB), Center for Translational Research, Institut Pasteur, Paris, France
| | - Pierre Charneau
- Molecular Virology and Vaccinoloy Unit, Department of Virology, Institut Pasteur, Paris, France
| | - Bruno Hoen
- Direction de la recherche médicale, Institut Pasteur, Paris, France
| | - Caroline Demeret
- Molecular Genetics of RNA Viruses, Department of Virology, Institut Pasteur, CNRS UMR 3569, Paris, France
| | - Sylvie Van Der Werf
- Molecular Genetics of RNA Viruses, Department of Virology, Institut Pasteur, CNRS UMR 3569, Paris, France; National Reference Center for Respiratory Viruses, Institut Pasteur, Paris, France
| | - Arnaud Fontanet
- Emerging Diseases Epidemiology Unit, Department of Global Health, Institut Pasteur, Paris, France; PACRI Unit, Conservatoire National des Arts et Métiers, Paris, France.
| | - Michael White
- Infectious Disease Epidemiology and Analytics Unit, Department of Global Health, Institut Pasteur, Paris, France; Malaria: Parasites and Hosts Unit, Department of Parasites and Insect Vectors, Institut Pasteur, Paris, France.
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Xie M, Quan H, Zeng Y, Yuan S, Liu Y, Yang Y. Sero-epidemiology study of hepatitis B virus surface antibodies from 2017 to 2019 among Chinese young adults in Hunan Province: A three-year retrospective study. Medicine (Baltimore) 2021; 100:e26665. [PMID: 34398029 PMCID: PMC8294875 DOI: 10.1097/md.0000000000026665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 06/29/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Data on the epidemiology characteristics of hepatitis B surface antibodies (anti-HBs) are lacking among central southern undeveloped areas of China, especially for young adults. This study aims to demonstrate the sero-epidemiology characteristics of HBsAb among young adults. AIMS The aim of this study is to demonstrate the epidemiological characteristics in prevalence of serum anti-HBs in college students of a university in Hunan Province, China. METHODS Data were derived from the health records (including serum HBsAb data) among freshmen of a university from 2017 to 2019 in Hunan Province, China. RESULTS A total of 13,426 freshmen with complete data who were born in Hunan Province were collected. The 3-year total prevalence of anti-HBs in freshmen was 44.75% with no statistically significant sex difference, the prevalence of anti-HBs is 46.93%, 53.13%, and 34.79% for 2017, 2018, and 2019, respectively. There are significant geographic differences of prevalence of anti-HBs in freshmen from different areas. The lowest prevalence of anti-HBs was 31.80% in freshmen from Xiangtan, and the highest prevalence of anti-HBs was 53.10% in freshmen from Yongzhou. CONCLUSION The prevalence of serum anti-HBs among the freshmen in Hunan from 2017 to 2019 is much lower than the average national level, and the prevalence in 2019 is significantly lower than that in 2017 and 2019. There are significant differences in different time and areas of the prevalence of anti-HBs. There is a necessity to carry out area-specific intensive immunization plan in a timely manner among young population in Hunan Province, China.
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Affiliation(s)
- Ming Xie
- School of Medicine, Hunan Normal University, Changsha, China
| | - Hongjiao Quan
- Hospital of Hunan Normal University, Hunan Normal University, Changsha China
| | - Yuan Zeng
- School of Medicine, Hunan Normal University, Changsha, China
| | - Shuqian Yuan
- School of Medicine, Hunan Normal University, Changsha, China
| | - Yinyue Liu
- School of Medicine, Hunan Normal University, Changsha, China
| | - Yide Yang
- School of Medicine, Hunan Normal University, Changsha, China
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13
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Muhsen K, Schwaber MJ, Bishara J, Kassem E, Atamna A, Na'amnih W, Goren S, Bialik A, Mohsen J, Zaide Y, Hazan N, Ariel-Cohen O, Cohen R, Shitrit P, Marchaim D, Benenson S, Ben-David D, Rubinovitch B, Gotessman T, Nutman A, Wiener-Well Y, Maor Y, Carmeli Y, Cohen D. Sero-Prevalence and Sero-Incidence of Antibodies to SARS-CoV-2 in Health Care Workers in Israel, Prior to Mass COVID-19 Vaccination. Front Med (Lausanne) 2021; 8:689994. [PMID: 34249979 PMCID: PMC8268152 DOI: 10.3389/fmed.2021.689994] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 05/13/2021] [Indexed: 01/13/2023] Open
Abstract
Objectives: This study aims to examine the prevalence and risk factors of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) sero-positivity in health care workers (HCWs), a main risk group, and assess the sero-incidence of SARS-CoV-2 infection between the first and second waves of coronavirus disease 2019 (COVID-19) in Israel. Methods: A longitudinal study was conducted among 874 HCWs from nine hospitals. Demographics, health information, and blood samples were obtained at baseline (first wave-April-May 2020) and at follow-up (n = 373) (second wave-September-November 2020). Sero-positivity was determined based on the detection of total antibodies to the nucleocapsid antigen of SARS-CoV-2, using electro-chemiluminescence immunoassay (Elecsys® Anti-SARS-CoV-2, Roche Diagnostics, Rotkreuz, Switzerland). Results: The sero-prevalence of SARS-CoV-2 antibodies was 1.1% [95% confidence intervals (CI) 0.6-2.1] at baseline and 8.3% (95% CI 5.9-11.6) at follow-up. The sero-conversion of SARS-CoV-2 serum antibody was 6.9% (95% CI 4.7-9.9) during the study period. The increase in SARS-CoV-2 sero-prevalence paralleled the rise in PCR-confirmed SARS-CoV-2 infections among the HCWs across the country. The likelihood of SARS-CoV-2 sero-prevalence was higher in males vs. females [odds ratio (OR) 2.52 (95% CI 1.05-6.06)] and in nurses vs. physicians [OR 4.26 (95% CI 1.08-16.77)] and was associated with being quarantined due to exposure to COVID-19 patients [OR 3.54 (95% CI 1.58-7.89)] and having a positive PCR result [OR 109.5 (95% CI 23.88-502.12)]. Conclusions: A significant increase in the risk of SARS-CoV-2 infection was found among HCWs between the first and second waves of COVID-19 in Israel. Nonetheless, the sero-prevalence of SARS-CoV-2 antibodies remains low, similar to the general population. Our findings reinforce the rigorous infection control policy, including quarantine, and utilization of personal protective equipment that should be continued together with COVID-19 immunization in HCWs and the general population.
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Affiliation(s)
- Khitam Muhsen
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mitchell J Schwaber
- National Institute for Antibiotic Resistance and Infection Control, Israel Ministry of Health, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jihad Bishara
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Infectious Diseases Unit, Rabin Medical Centre, Beilinson Hospital, Petah-Tiqva, Israel
| | - Eias Kassem
- Department of Pediatrics, Hillel Yaffe Medical Centre, Hadera, Israel
| | - Alaa Atamna
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Infectious Diseases Unit, Rabin Medical Centre, Beilinson Hospital, Petah-Tiqva, Israel
| | - Wasef Na'amnih
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sophy Goren
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Anya Bialik
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jameel Mohsen
- Department of Cardiology, Hillel Yaffe Medical Centre, Hadera, Israel
| | - Yona Zaide
- American Medical Laboratories, Herzlya, Israel
| | | | - Ortal Ariel-Cohen
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Regev Cohen
- Infection Control Unit, Sanz Medical Centre, Netanya, Israel
| | - Pnina Shitrit
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Infection Control Unit, Meir Medical Centre, Kefar Saba, Israel
| | - Dror Marchaim
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Infection Control Unit, Shamir (Assaf Harofeh) Medical Centre, Be'er Ya'akov, Israel
| | - Shmuel Benenson
- Department of Clinical Microbiology and Infectious Diseases, Hadassah Hebrew University Medical Centre, Jerusalem, Israel
| | - Debby Ben-David
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Infection Control Unit, Wolfson Medical Centre, Wolfson, Israel
| | - Bina Rubinovitch
- Infection Control Unit, Beilinson Hospital, Rabin Medical Centre, Petah-Tiqva, Israel
| | - Tamar Gotessman
- Infectious Disease and Infection Control Service, Hasharon Hospital, Rabin Medical Centre, Petah-Tiqva, Israel
| | - Amir Nutman
- National Institute for Antibiotic Resistance and Infection Control, Israel Ministry of Health, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yonit Wiener-Well
- Infectious Disease Unit, Shaare Zedek Medical Centre, Jerusalem, Israel
| | - Yasmin Maor
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Infection Control Unit, Wolfson Medical Centre, Wolfson, Israel.,Infectious Disease Unit, Wolfson Medical Centre, Wolfson, Israel
| | - Yehuda Carmeli
- National Institute for Antibiotic Resistance and Infection Control, Israel Ministry of Health, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Dani Cohen
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Adekola HA, Abdullahi IN, Emeribe AU, Faruku N, Uzairue L, Adeyemi Billyrose OM, Shuwa HA. Sero-survey of measles virus antibodies among symptomatic children attending Abuja Teaching Hospital, Nigeria. GMS Hyg Infect Control 2021; 16:Doc04. [PMID: 33643771 PMCID: PMC7894129 DOI: 10.3205/dgkh000375] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Background: Nigeria is one of the countries with a high prevalence of measles outbreak in children under 5 years old, despite a history of vaccination. This study aims to determine the prevalence of anti-measles virus IgM and IgG among children under 5 years attending the University of Abuja Teaching Hospital (UATH), Gwagwalada, FCT Abuja, Nigeria. Materials and methods: Whole blood was collected, centrifuged, and serum anti-IgM and anti-IgG against measles virus was analysed using ELISA. Sociodemographic variables and vaccination history of subjects were obtained by interview-based questionnaires. Results: The overall anti-Measles virus IgG and IgM seroprevalences were 29.2% and 14.6%, respectively. The prevalence of measles IgG was significantly associated with the parent’s employment status (X2=11.67, p=0.008). However, the prevalence of measles virus IgM was significantly associated with children’s age (X2=16.62, p=0.002), parents’ employment status and children’s vaccination status (X2 =7.72, p=0.02). Conclusion: A majority of study participants were not immunised against measles, and a significant number of participants had serological evidence of acute measles virus infection. There is a need for more concerted and massive measles vaccination of children.
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Affiliation(s)
| | - Idris Nasir Abdullahi
- Department of Medical Laboratory Science, Faculty of Allied Health Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - Anthony Uchenna Emeribe
- Department of Medical Laboratory Science, Faculty of Allied Medical Sciences, University of Calabar, Calabar, Nigeria
| | - Nafiu Faruku
- Department of Medical Laboratory Science, Faculty of Allied Health Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - Leonard Uzairue
- Department of Microbiology, Federal University of Agriculture, Abeokuta, Nigeria
| | | | - Halima Ali Shuwa
- University Health Center, Faculty of Health and Medical Sciences, Federal University, Dutse, Nigeria
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15
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Kyohere M, Davies HG, Musoke P, Nakimuli A, Tusubira V, Tasimwa HB, Nsimire JS, Heath P, Cose S, Baker C, Le Doare K, Sekikubo M. Seroepidemiology of maternally-derived antibody against Group B Streptococcus (GBS) in Mulago/Kawempe Hospitals Uganda - PROGRESS GBS. Gates Open Res 2020; 4:155. [PMID: 33299966 PMCID: PMC7706450 DOI: 10.12688/gatesopenres.13183.2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2020] [Indexed: 01/31/2023] Open
Abstract
Background: Group B
Streptococcus (GBS) is a major contributor to the high burden of neonatal and young infant infectious disease in resource- limited settings. As disease protection during the first six months of life is provided via placental transfer of maternal antibodies, a maternal GBS vaccine may provide an effective strategy to reduce infectious death and disability. An efficacy study may be difficult because of the large sample size required and alternative approaches such as serocorrelates of protection based on natural antibody concentration are being considered. Such studies would need to be undertaken in high burden settings such as Uganda. We therefore aim to evaluate the feasibility and acceptability of a GBS sero-epidemiology study in Kampala, Uganda. Methods: This is a prospective cohort and nested case-control study, conducted across two-centres with two entry points. A) consecutive women and their infants at birth, with collection of maternal swab, cord and maternal blood, and follow up by telephone until the infant is 3 months old; B) any infant under 3 months of age, presenting with signs of sepsis to any of the paediatric units, with collection of blood culture, cerebrospinal fluid and nasopharyngeal swabs. Any infants identified as having GBS disease (defined as GBS isolated from a normally sterile site) will be recruited and followed up for two years to assess their neurodevelopment. A nested qualitative study will investigate stakeholder (pregnant women and their families, healthcare workers and community leaders) opinions of sampling for such a study and understanding and potential uptake of vaccines in pregnancy. Discussion: The primary aim is to determine anti-GBS antibody concentration in infants with GBS disease compared to healthy controls. Secondary outcomes include stillbirth and all-cause infection and acceptance of sample methods and vaccination. The findings will inform scalability and sustainability of the programme in Uganda.
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Affiliation(s)
- Mary Kyohere
- Makerere University - Johns Hopkins University (MUJHU) Research Collaboration, Kampala, Uganda
| | - Hannah Georgia Davies
- Paediatric Infection and Immunology Institute of Infection and Immunity, St George's, University of London, London, SW170RE, UK
| | - Philippa Musoke
- Makerere University - Johns Hopkins University (MUJHU) Research Collaboration, Kampala, Uganda.,Department of Paediatrics and Child Health, Makerere University, College of Health Sciences, Kampala, 256, Uganda
| | - Annettee Nakimuli
- Department of Obstetrics and Gynaecology,, Makerere University, College of Health Sciences, Kampala, 256, Uganda
| | - Valerie Tusubira
- Makerere University - Johns Hopkins University (MUJHU) Research Collaboration, Kampala, Uganda
| | - Hannington Baluku Tasimwa
- Department of Medical Microbiology, Makerere University College of Health Sciences, Kampala, 256, Uganda
| | | | - Paul Heath
- Paediatric Infection and Immunology Institute of Infection and Immunity, St George's, University of London, London, SW170RE, UK
| | - Stephen Cose
- Immunology and Vaccines Research Unit, MRC/UVRI and LSHTM Uganda, Entebbe, Uganda
| | - Carol Baker
- University of Texas Health Science Center, McGovern Medical School, Houston, Texas, TX 77030, USA
| | - Kirsty Le Doare
- Paediatric Infection and Immunology Institute of Infection and Immunity, St George's, University of London, London, SW170RE, UK.,Immunology and Vaccines Research Unit, MRC/UVRI and LSHTM Uganda, Entebbe, Uganda
| | - Musa Sekikubo
- Department of Obstetrics and Gynaecology,, Makerere University, College of Health Sciences, Kampala, 256, Uganda
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16
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Motaze NV, Makhathini L, Smit SB, Adu-Gyamfi CG, Fortuin M, Wiysonge CS, Suchard SM. Rubella seroprevalence using residual samples from the South African measles surveillance program: a cross-sectional analytic study. Hum Vaccin Immunother 2020; 16:2656-2662. [PMID: 32298204 PMCID: PMC7733892 DOI: 10.1080/21645515.2020.1738834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 02/11/2020] [Accepted: 03/01/2020] [Indexed: 11/29/2022] Open
Abstract
Introduction: South Africa is yet to introduce rubella-containing vaccines (RCV) into its routine immunization schedule. Selecting the target population when introducing RCV should take into account the ages of susceptible individuals in the population. We aimed to determine the seroprevalence of antibodies to rubella and characterize immunity gaps among individuals of all ages in South Africa. Methods: We tested for rubella immunoglobulin G (IgG) antibodies with a commercial enzyme-linked immunosorbent assay. We used residual samples collected from 2016 through 2018 as part of the national measles surveillance program. We only tested samples that were negative for measles and rubella immunoglobulin M (IgM) and explored the association between rubella susceptibility (IgG negative) and predictor variables (year of sample collection, age, sex, and province of residence) using logistic regression analysis. Results: We obtained results for 6057 records. Rubella susceptibility was highest among Individuals aged zero to 11 months (81.9%), followed by children 1 to 5 years old (71.5%), 6 to 10 y old (40.9%) and 11 to 15 y old (31.25) while the smallest proportion of susceptible individuals was among those 16 to 49 y old (19.9%). Females were less likely to be susceptible to rubella compared to males (OR = 0.79 (95%CI: 0.71-0.87), P < .001) in unadjusted analysis but this effect was not observed after adjusting for age and province. In multivariable logistic regression, age (OR = 6.24 (4.52-8.63), P < .001) and province of residence (OR = 0.97 (95%CI: 0.95-0.99), P = .01) were associated with rubella susceptibility. Conclusion: In the absence of rubella vaccination in the Expanded Program on Immunization in South Africa, the bulk of individuals susceptible to rubella are children under 16 y old. About 20% of individuals 16 to 49 y old are susceptible to rubella. This susceptibility gap must be born in mind during RCV introduction.
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Affiliation(s)
- N. V. Motaze
- A Division of the National Health Laboratory Service, Centre for Vaccines and Immunology, National Institute for Communicable Diseases, Johannesburg, South Africa
- Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - L. Makhathini
- A Division of the National Health Laboratory Service, Centre for Vaccines and Immunology, National Institute for Communicable Diseases, Johannesburg, South Africa
| | - S. B. Smit
- A Division of the National Health Laboratory Service, Centre for Vaccines and Immunology, National Institute for Communicable Diseases, Johannesburg, South Africa
| | - C. G. Adu-Gyamfi
- A Division of the National Health Laboratory Service, Centre for Vaccines and Immunology, National Institute for Communicable Diseases, Johannesburg, South Africa
- Chemical Pathology, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - M. Fortuin
- A Division of the National Health Laboratory Service, Centre for Vaccines and Immunology, National Institute for Communicable Diseases, Johannesburg, South Africa
| | - C. S. Wiysonge
- Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - S. M. Suchard
- A Division of the National Health Laboratory Service, Centre for Vaccines and Immunology, National Institute for Communicable Diseases, Johannesburg, South Africa
- Chemical Pathology, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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17
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Na’amnih W, Carmeli Y, Asato V, Goren S, Adler A, Cohen D, Muhsen K. Enhanced Humoral Immune Responses against Toxin A and B of Clostridium difficile is Associated with a Milder Disease Manifestation. J Clin Med 2020; 9:jcm9103241. [PMID: 33050453 PMCID: PMC7601293 DOI: 10.3390/jcm9103241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 09/23/2020] [Accepted: 09/30/2020] [Indexed: 01/05/2023] Open
Abstract
The role of the humoral immune response to Clostridium difficile in modulating the severity of C. difficile infection (CDI) is unclear. We compared the levels of serum immunoglobulin G (IgG) and immunoglobulin A (IgA) against toxin A (TcdA) and toxin B (TcdB) of C. difficile between CDI and control patients and according to disease severity. The levels of IgG and IgA antibodies against TcdA and TcdB were measured in sera from patients with CDI (n = 50; 19 had severe CDI) and control patients (n = 52), using ELISA. Patients with CDI had higher levels of IgG antibodies against TcdA and TcdB than controls (p = 0.001 and p = 0.04, respectively). Higher IgG levels against TcdA and TcdB were found in patients with mild vs. severe CDI 7-14 days after the diagnosis (p = 0.004 and 0.036, respectively). A factor analysis included both IgA and IgG levels against both toxins into one composite variable, which was of higher values in patients with mild vs. severe CDI (p = 0.026). In conclusion, the systemic humoral immune responses against TcdA and TcdB might modulate the severity of CDI. These preliminary findings provide a basis for future large-scale studies and support the development and evaluation of active and passive immunotherapies for CDI management.
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Affiliation(s)
- Wasef Na’amnih
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel; (V.A.); (S.G.); (A.A.); (D.C.)
- Department of Geriatric Rehabilitation, Tel-Aviv Sourasky medical Center, Tel Aviv 6423906, Israel
- Correspondence: (W.N.); (K.M.); Tel.: +972-3-6405945 (W.N.); Fax: +972-3-6409868 (W.N.)
| | - Yehuda Carmeli
- Division of Epidemiology, and the National Institute for Antibiotic Resistance and Infection Control, Tel Aviv Sourasky Medical Center, Tel Aviv 6423906, Israel;
| | - Valeria Asato
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel; (V.A.); (S.G.); (A.A.); (D.C.)
| | - Sophy Goren
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel; (V.A.); (S.G.); (A.A.); (D.C.)
| | - Amos Adler
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel; (V.A.); (S.G.); (A.A.); (D.C.)
- Clinical Microbiology Laboratory, Tel-Aviv Sourasky medical Center, Tel Aviv 6423906, Israel
| | - Dani Cohen
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel; (V.A.); (S.G.); (A.A.); (D.C.)
| | - Khitam Muhsen
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel; (V.A.); (S.G.); (A.A.); (D.C.)
- Correspondence: (W.N.); (K.M.); Tel.: +972-3-6405945 (W.N.); Fax: +972-3-6409868 (W.N.)
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18
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Bolotin S, Severini A, Hatchette T, McLachlan E, Savage R, Hughes SL, Wang J, Deeks SL, Wilson S, Brisson M, Halperin SA, Gubbay J, Mazzulli T, Serhir B, Ward BJ, Crowcroft N. Assessment of population immunity to measles in Ontario, Canada: a Canadian Immunization Research Network (CIRN) study. Hum Vaccin Immunother 2019; 15:2856-2864. [PMID: 31184979 PMCID: PMC6930091 DOI: 10.1080/21645515.2019.1619402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Canada eliminated measles in 1998. We conducted a sero-epidemiology study to estimate population immunity to measles in the province of Ontario, Canada and to identify groups at higher risk of outbreaks. We used a previously developed modified enzyme immunoassay to test 1,199 residual sera from patients aged 1–39 years. We re-tested negative and equivocal sera using a plaque reduction neutralization assay. We interpreted our results in the context of Ontario’s immunization program and vaccine coverage data. Of 1,199 sera, 1035 (86.3%, 95% confidence interval (CI) 84.4, 88.2) were above the measles threshold for protection, 70 (5.8%, 95% CI 4.5, 7.2) were equivocal and 94 (7.8%, 95% CI 6.3, 9.4) were negative. The proportion of positive sera was highest for those 1–5 years, with 180/199 (90.5%, 95% CI 86.4, 94.5) positive sera, and lowest for those age 12–19 years, at 158/199 (79.4%, 95% CI 73.8, 85.0). Adjusted for age, females were more likely than males to have antibody titers above the threshold of protection (odds ratio = 1.60, 95% CI 1.14, 2.24). Most of the study cohort were eligible for two measles vaccine doses, and vaccine uptake in Ontario is >90% for school-aged cohorts. We observed a higher than expected proportion of sera with antibody levels below the threshold of protection, suggesting that immunity in some Ontario age-groups may be waning, despite high vaccine coverage. Alternatively, the traditional measles correlates of protection may not be an appropriate measure of population protection in measles-eliminated settings.
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Affiliation(s)
- Shelly Bolotin
- Public Health Ontario, Toronto, ON, Canada.,Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Alberto Severini
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada.,Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Todd Hatchette
- Department of Pathology and Laboratory Medicine, Nova Scotia Health Authority, Halifax, NS, Canada.,Department of Pathology, Dalhousie University, Halifax, NS, Canada
| | - Elizabeth McLachlan
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
| | | | | | - John Wang
- Public Health Ontario, Toronto, ON, Canada
| | - Shelley L Deeks
- Public Health Ontario, Toronto, ON, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Sarah Wilson
- Public Health Ontario, Toronto, ON, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.,ICES, Toronto, ON, Canada
| | - Marc Brisson
- Département de médecine sociale et préventive, Université Laval, Québec City, QC, Canada
| | - Scott A Halperin
- Department of Pathology, Dalhousie University, Halifax, NS, Canada.,Canadian Center for Vaccinology, IWK Health Centre, Halifax, NS, Canada
| | - Jonathan Gubbay
- Public Health Ontario, Toronto, ON, Canada.,Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Tony Mazzulli
- Public Health Ontario, Toronto, ON, Canada.,Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Department of Microbiology, Mount Sinai Hospital, Toronto, ON, Canada
| | - Bouchra Serhir
- Laboratoire de santé publique du Québec/Institut national de santé publique du Québec, Sainte-Anne-de-Bellevue, QC, Canada
| | - Brian J Ward
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada.,Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Natasha Crowcroft
- Public Health Ontario, Toronto, ON, Canada.,Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.,ICES, Toronto, ON, Canada
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19
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Kirisawa R, Toishi Y, Hashimoto H, Tsunoda N. Isolation of an Equine Foamy Virus and Sero-Epidemiology of the Viral Infection in Horses in Japan. Viruses 2019; 11:E613. [PMID: 31284407 DOI: 10.3390/v11070613] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/02/2019] [Accepted: 07/03/2019] [Indexed: 11/16/2022] Open
Abstract
An equine foamy virus (EFV) was isolated for the first time in Japan from peripheral blood mononuclear cells of a broodmare that showed wobbler syndrome after surgery for intestinal volvulus and the isolate was designated as EFVeca_LM. Complete nucleotide sequences of EFVeca_LM were determined. Nucleotide sequence analysis of the long terminal repeat (LTR) region, gag, pol, env, tas, and bel2 genes revealed that EFVeca_LM and the EFV reference strain had 97.2% to 99.1% identities. For a sero-epidemiological survey, indirect immunofluorescent antibody tests were carried out using EFVeca_LM-infected cells as an antigen against 166 sera of horses in five farms collected in 2001 to 2002 and 293 sera of horses in eight farms collected in 2014 to 2016 in Hokkaido, Japan. All of the farms had EFV antibody-positive horses, and average positive rates were 24.6% in sera obtained in 2001 to 2002 and 25.6% in sera obtained in 2014 to 2016 from broodmare farms. The positive rate in a stallion farm (Farm A) in 2002 was 10.7%, and the positive rates in two stallion farms, Farms A and B, in 2015 were 40.9% and 13.3%, respectively. The results suggested that EFV infection is maintained widely in horses in Japan.
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20
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Goel A, Seguy N, Aggarwal R. Burden of hepatitis C virus infection in India: A systematic review and meta-analysis. J Gastroenterol Hepatol 2019; 34:321-329. [PMID: 30176181 DOI: 10.1111/jgh.14466] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/29/2018] [Accepted: 08/30/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM Burden of hepatitis C in India is not known. We therefore conducted a systematic review of the available data on anti-hepatitis C virus (HCV) seroprevalence in the Indian population. METHODS We searched several publication databases for English language papers that reported data on anti-HCV seroprevalence from India and also identified other unpublished sources of such data. Data on groups likely to represent seroprevalence in general population and in selected high-risk groups were extracted and subjected to meta-analysis. RESULTS Of the 3995 published papers and 94 additional data sources identified, 327 were selected; these provided 414 anti-HCV seroprevalence data points. Pooled anti-HCV seroprevalence rates in community-based studies, blood donors, and pregnant women were 0.85% (95% confidence interval: 0.00-3.98%), 0.44% (0.40-0.49), and 0.88% (0.21-1.90), respectively. Among groups considered at high risk of HCV, pooled anti-HCV seroprevalence rates were as follows: people living with HIV (40 studies from 17 states: 3.51% [2.43-4.76]), persons on maintenance hemodialysis (37, 13; 19.23% [13.52-25.65]), people who inject drugs (46, 14; 44.71% [37.50-52.03]), multi-transfused persons (38, 12; 24.06% [20.00-28.36]), persons with sexually transmitted diseases (7, 5; 4.10% [0.98-9.04]), and those with high-risk sex behavior (6, 5; 4.06% [1.79-7.10]). CONCLUSIONS Community-based data on HCV seroprevalence in India were limited. Large amount of data on blood donors and pregnant women were identified, with pooled anti-HCV seroprevalence rates of 0.44% and 0.88%, respectively. Among high-risk groups, anti-HCV prevalence was higher among people living with HIV, those with sexually transmitted diseases, high-risk sex behavior or injection drug use, and those receiving hemodialysis or frequent transfusions.
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Affiliation(s)
- Amit Goel
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Nicole Seguy
- World Health Organization India Country Office, New Delhi, India
| | - Rakesh Aggarwal
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
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van den Hoogen LL, Walk J, Oulton T, Reuling IJ, Reiling L, Beeson JG, Coppel RL, Singh SK, Draper SJ, Bousema T, Drakeley C, Sauerwein R, Tetteh KKA. Antibody Responses to Antigenic Targets of Recent Exposure Are Associated With Low-Density Parasitemia in Controlled Human Plasmodium falciparum Infections. Front Microbiol 2019; 9:3300. [PMID: 30700984 PMCID: PMC6343524 DOI: 10.3389/fmicb.2018.03300] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 12/18/2018] [Indexed: 12/05/2022] Open
Abstract
The majority of malaria infections in low transmission settings remain undetectable by conventional diagnostics. A powerful model to identify antibody responses that allow accurate detection of recent exposure to low-density infections is controlled human malaria infection (CHMI) studies in which healthy volunteers are infected with the Plasmodium parasite. We aimed to evaluate antibody responses in malaria-naïve volunteers exposed to a single CHMI using a custom-made protein microarray. All participants developed a blood-stage infection with peak parasite densities up to 100 parasites/μl in the majority of participants (50/54), while the remaining four participants had peak densities between 100 and 200 parasites/μl. There was a strong correlation between parasite density and antibody responses associated with the most reactive blood-stage targets 1 month after CHMI (Etramp 5, GLURP-R2, MSP4 and MSP1-19; Spearman’s ρ = 0.82, p < 0.001). Most volunteers developed antibodies against a potential marker of recent exposure: Etramp 5 (37/45, 82%). Our findings justify validation in endemic populations to define a minimum set of antigens needed to detect exposure to natural low-density infections.
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Affiliation(s)
- Lotus L van den Hoogen
- Department of Immunology and Infection, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Jona Walk
- Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, Netherlands
| | - Tate Oulton
- Department of Immunology and Infection, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Isaie J Reuling
- Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, Netherlands
| | | | - James G Beeson
- Burnet Institute, Melbourne, VIC, Australia.,Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia.,Department of Microbiology, Monash University, Clayton, VIC, Australia
| | - Ross L Coppel
- Department of Microbiology, Monash University, Clayton, VIC, Australia
| | - Susheel K Singh
- Department of Congenital Disorders, Statens Serum Institut, Copenhagen, Denmark.,Department of International Health, Immunology and Microbiology, Centre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark
| | - Simon J Draper
- Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Teun Bousema
- Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, Netherlands
| | - Chris Drakeley
- Department of Immunology and Infection, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Robert Sauerwein
- Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, Netherlands
| | - Kevin K A Tetteh
- Department of Immunology and Infection, London School of Hygiene & Tropical Medicine, London, United Kingdom
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RASOOL MUHAMMADHIDAYAT, RAFIQ AHSAN, NAWAZ MUHAMMADZEESHAN, SHAFIQUE MUHAMMAD, SAQALEIN MUHAMMAD. Sero-epidemiology and Risk Factor Analysis of Measles Among Children in Pakistan. Pol J Microbiol 2018; 67:227-231. [PMID: 30015462 PMCID: PMC7256824 DOI: 10.21307/pjm-2018-025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/21/2017] [Revised: 07/12/2017] [Accepted: 07/12/2017] [Indexed: 11/11/2022] Open
Abstract
Comparative cross sectional study was conducted on blood samples (n = 231) collected from children of 1 to 10 years of age in Punjab Pakistan through convenient sampling method. Indirect haemagglutination assay (IHA) was standardized and used for serodiagnosis and evaluation of humoral immunity against measles. Associated risk factors including age, gender, locale, and vaccination status were analyzed. Geometric mean titre (GMT) of vaccinated individuals was significantly higher (p < 0.001) than that of non-vaccinated individuals showing that IHA titre of vaccinated individuals was a measure of humoral immune response; whereas, in case of non-vaccinated individuals an indicative of exposure to the measles infection.
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Affiliation(s)
| | - AHSAN RAFIQ
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | | | - MUHAMMAD SHAFIQUE
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | - MUHAMMAD SAQALEIN
- Department of Microbiology, Government College University, Faisalabad, Pakistan
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23
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Payne DC, Biggs HM, Al-Abdallat MM, Alqasrawi S, Lu X, Abedi GR, Haddadin A, Iblan I, Alsanouri T, Al Nsour M, Sheikh Ali S, Rha B, Trivedi SU, Rasheed MAU, Tamin A, Lamers MM, Haagmans BL, Erdman DD, Thornburg NJ, Gerber SI. Multihospital Outbreak of a Middle East Respiratory Syndrome Coronavirus Deletion Variant, Jordan: A Molecular, Serologic, and Epidemiologic Investigation. Open Forum Infect Dis 2018; 5:ofy095. [PMID: 30294616 PMCID: PMC5965092 DOI: 10.1093/ofid/ofy095] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 04/25/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND An outbreak of Middle East respiratory syndrome coronavirus (MERS-CoV) in Jordan in 2015 involved a variant virus that acquired distinctive deletions in the accessory open reading frames. We conducted a molecular and seroepidemiologic investigation to describe the deletion variant's transmission patterns and epidemiology. METHODS We reviewed epidemiologic and medical chart data and analyzed viral genome sequences from respiratory specimens of MERS-CoV cases. In early 2016, sera and standardized interviews were obtained from MERS-CoV cases and their contacts. Sera were evaluated by nucleocapsid and spike protein enzyme immunoassays and microneutralization. RESULTS Among 16 cases, 11 (69%) had health care exposure and 5 (31%) were relatives of a known case; 13 (81%) were symptomatic, and 7 (44%) died. Genome sequencing of MERS-CoV from 13 cases revealed 3 transmissible deletions associated with clinical illness during the outbreak. Deletion variant sequences were epidemiologically clustered and linked to a common transmission chain. Interviews and sera were collected from 2 surviving cases, 23 household contacts, and 278 health care contacts; 1 (50%) case, 2 (9%) household contacts, and 3 (1%) health care contacts tested seropositive. CONCLUSIONS The MERS-CoV deletion variants retained human-to-human transmissibility and caused clinical illness in infected persons despite accumulated mutations. Serology suggested limited transmission beyond that detected during the initial outbreak investigation.
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Affiliation(s)
- Daniel C Payne
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Holly M Biggs
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | | | - Xiaoyan Lu
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Glen R Abedi
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Ibrahim Iblan
- Field Epidemiology Training Program, Jordan Ministry of Health, Amman, Jordan
| | | | | | | | - Brian Rha
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Suvang U Trivedi
- IHRC, Inc, contracting agency for the Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Mohammed Ata Ur Rasheed
- IHRC, Inc, contracting agency for the Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Azaibi Tamin
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Mart M Lamers
- Viroscience Department, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Bart L Haagmans
- Viroscience Department, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Dean D Erdman
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Natalie J Thornburg
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Susan I Gerber
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
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Ayoola MC, Ogugua AJ, Akinseye VO, Joshua TO, Banuso MF, Adedoyin FJ, Adesokan HK, Omobowale TO, Abiola JO, Otuh PI, Nottidge HO, Dale EJ, Perrett L, Taylor A, Stack J, Cadmus SIB. Sero-epidemiological survey and risk factors associated with brucellosis in dogs in south-western Nigeria. Pan Afr Med J 2016; 23:29. [PMID: 27200134 PMCID: PMC4856509 DOI: 10.11604/pamj.2016.23.29.7794] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 12/06/2015] [Indexed: 11/16/2022] Open
Abstract
Introduction In Nigeria, there is limited information on brucellosis particularly in dogs, despite its public health implications. We undertook a sero-epidemiological survey of brucellosis in dogs to determine the prevalence of the disease and associated risk factors for its occurrence in Nigeria. Methods A cross-sectional study was conducted to screen dogs in south-western Nigeria for antibodies to Brucella sp using the rapid slide agglutination test (RSA) and Rose Bengal test (RBT), with positive samples confirmed respectively by serum agglutination test (SAT) and competitive enzyme linked immunosorbent assay (cELISA). Data were analyzed with STATA-12. Results From the 739 dog sera tested, 81 (10.96%) were positive by RSA and 94 (12.72%) by RBT; these were corroborated with SAT (4/81; 4.94%) and cELISA (1/94; 1.06%), respectively. Logistic regression identified location (OR=0.04; 95% CI: 0.02-0.09), breed (OR=1.71; 95% CI: 1.34-2.19), age (OR=0.10; 95% CI: 0.04-0.30) and management system (OR=8.51; 95% CI: 1.07-68.05) as risk factors for Brucella infection by RSA. However, location (OR=10.83; 95% CI: 5.48-21.39) and history of infertility (OR=2.62; 95% CI: 1.41-4.84) were identified as risk factors using RBT. Conclusion Given the 10.96% to 12.72% seroprevalence of brucellosis recorded in this study, we advocate control of the disease in dogs, and public health education for those at risk of infection. Again, further studies are required to elucidate the role of dogs in the epidemiology of brucellosis in Nigeria considering the conducive human-animal interface and ecological factors responsible for the transmission of the disease.
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Affiliation(s)
- Modupe Comfort Ayoola
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Akwoba Joseph Ogugua
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Victor Oluwatoyin Akinseye
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Tunde Olu Joshua
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Morenikeji Folusho Banuso
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta, Nigeria
| | - Folashade Julianah Adedoyin
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Hezekiah Kehinde Adesokan
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Temidayo Olutayo Omobowale
- Department of Veterinary Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - John Olusoji Abiola
- Department of Veterinary Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Patricia Ihuaku Otuh
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Helen Oyebukola Nottidge
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta, Nigeria
| | - Emma-Jane Dale
- Department of Bacteriology, Animal & Plant Health Agency, United Kingdom
| | - Lorraine Perrett
- Department of Bacteriology, Animal & Plant Health Agency, United Kingdom
| | - Andrew Taylor
- Department of Bacteriology, Animal & Plant Health Agency, United Kingdom
| | - Judy Stack
- Department of Bacteriology, Animal & Plant Health Agency, United Kingdom
| | - Simeon Idowu Babalola Cadmus
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
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Nijsten DRE, Carrillo-Santisteve P, Miglietta A, Ruitenberg J, Lopalco PL. Is EU/EEA population protected from polio? Hum Vaccin Immunother 2015; 11:2123-31. [PMID: 25898095 PMCID: PMC4635704 DOI: 10.1080/21645515.2015.1016673] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 11/24/2014] [Revised: 01/15/2015] [Accepted: 01/31/2015] [Indexed: 11/10/2022] Open
Abstract
The WHO European Region has been declared polio-free since 2002. By 2010, inactivated polio vaccine (IPV) was the only polio vaccine in use in the EU/EEA for the primary vaccination of children. A systematic review of the literature on polio seroprevalence studies, complemented by the analysis of available vaccine coverage data, has been carried out with the aim of assessing the level of protection against polio in the European population. A total of 52 studies, with data from 14 out of the 31 EU/EEA countries, were included in the analysis. This systematic review shows that, overall, seroprevalence for PV1 and PV3 is high in most countries, although seroimmunity gaps have been detected in several birth cohorts. In particular, relatively low immunity status was found in some countries for individuals born in the 60's and 70's. Discrepancies between reported vaccination coverage and immunity levels have been also highlighted. Countries should make sure that their population is being vaccinated for polio to reduce the risk of local poliovirus transmission in case of importation. Moreover, assessing immunity status should be priority for those traveling to areas where wild polioviruses are still circulating.
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Affiliation(s)
- DRE Nijsten
- European Centre for Disease Prevention and Control; Stockholm, Sweden
| | | | - A Miglietta
- European Centre for Disease Prevention and Control; Stockholm, Sweden
| | - J Ruitenberg
- European Centre for Disease Prevention and Control; Stockholm, Sweden
| | - PL Lopalco
- European Centre for Disease Prevention and Control; Stockholm, Sweden
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Supargiyono S, Bretscher MT, Wijayanti MA, Sutanto I, Nugraheni D, Rozqie R, Kosasih AA, Sulistyawati S, Hawley WA, Lobo NF, Cook J, Drakeley CJ. Seasonal changes in the antibody responses against Plasmodium falciparum merozoite surface antigens in areas of differing malaria endemicity in Indonesia. Malar J 2013; 12:444. [PMID: 24321092 PMCID: PMC3866602 DOI: 10.1186/1475-2875-12-444] [Citation(s) in RCA: 27] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 12/04/2013] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The transmission of malaria in Indonesia is highly heterogeneous spatially and seasonally. Anti-malaria antibody responses can help characterize this variation. In the present study antibody responses to Plasmodium falciparum MSP-1 and AMA-1 were measured to assess the transmission intensity in a hypo-endemic area of Purworejo and a meso-endemic area of Lampung during low and high transmission seasons. METHODS Filter-paper blood spot samples collected from Purworejo and Lampung by cross-sectional survey during high and low transmission season were stored at -20°C. Indirect ELISA assays were carried out using PfMSP1-19 and PfAMA1 antigens. A positivity threshold was determined by samples from local unexposed individuals, and the differences in seroprevalence, antibody level and correlation between antibody level and age in each site were statistically analysed. RESULTS Prevalence of antibodies to either PfMSP1-19 or PfAMA1 was higher in Lampung than in Purworejo in both the low (51.3 vs 25.0%) and high transmission season (53.9 vs 37.5%). The magnitude of antibody responses was associated with increasing age in both sites and was higher in Lampung. Age-adjusted seroconversion rates showed an approximately ten-fold difference between Lampung and Purowejo. Two different seroconversion rates were estimated for Lampung suggesting behaviour-related differences in exposure. In both settings antibody responses to PfMSP1-19 were significantly lower in the low season compared to the high season. CONCLUSION Seasonal changes may be detectable by changes in antibody responses. This is particularly apparent in lower transmission settings and with less immunogenic antigens (in this case PfMSP1-19). Examination of antibody levels rather than seroprevalence is likely to be a more sensitive indicator of changes in transmission. These data suggest that sero-epidemiological analysis may have a role in assessing short-term changes in exposure especially in low or seasonal transmission settings.
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Affiliation(s)
- Supargiyono Supargiyono
- Center for Tropical Medicine, Faculty of Medicine, Gadjah Mada University, Jln Teknika Utara, Barek, Yogyakarta 55281, Indonesia
| | - Michael T Bretscher
- MRC Centre for Outbreak Analysis and Modelling, Department of Infectious Disease Epidemiology, Imperial College London, St Mary’s Campus, Norfolk Place, London W2 1PG, UK
| | - Mahardika A Wijayanti
- Center for Tropical Medicine, Faculty of Medicine, Gadjah Mada University, Jln Teknika Utara, Barek, Yogyakarta 55281, Indonesia
| | - Inge Sutanto
- Department of Parasitology Faculty of Medicine, University of Indonesia, Jln Salemba Raya, Jakarta, Indonesia
| | - Dian Nugraheni
- Center for Tropical Medicine, Faculty of Medicine, Gadjah Mada University, Jln Teknika Utara, Barek, Yogyakarta 55281, Indonesia
| | - Royhan Rozqie
- Center for Tropical Medicine, Faculty of Medicine, Gadjah Mada University, Jln Teknika Utara, Barek, Yogyakarta 55281, Indonesia
| | - Ayleen A Kosasih
- Department of Parasitology Faculty of Medicine, University of Indonesia, Jln Salemba Raya, Jakarta, Indonesia
| | - Sulistyawati Sulistyawati
- Center for Tropical Medicine, Faculty of Medicine, Gadjah Mada University, Jln Teknika Utara, Barek, Yogyakarta 55281, Indonesia
- Department of Public Health Science, Faulty of Public Health, Ahmad Dahlan University, Jln Prof Dr Soepomo, Warungboto, Umbulharjo, Yogyakarta, Indonesia
| | | | - Neil F Lobo
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Jackie Cook
- Malaria Research Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Chris J Drakeley
- Department of Immunology & Infection, London School of Hygiene and Tropical Medicine, London W1CE 7HT, UK
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Chaudhry R, Das A, Premlatha M, Choudhary A, Chourasia B, Chandel D, Dey A. Serological & molecular approaches for diagnosis of leptospirosis in a tertiary care hospital in north India: a 10-year study. Indian J Med Res 2013; 137:785-90. [PMID: 23703348 PMCID: PMC3724261] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND & OBJECTIVES Leptospirosis, a spirochetal zoonosis, is underreported from the northern States of India. This study reports results of a 10-year retrospective sero-epidemiological survey of leptospirosis conducted in a tertiary care hospital in New Delhi, India. METHOD A total of 1453 patients clinically suspected for leptospirosis were included and investigated initially by IgM ELISA. A proportion of these were subjected to culture, microscopic agglutination test (MAT) and polymerase chain reaction (PCR). RESULTS Of the 1453 patients, 391 (26.90%) were positive serologically by IgM ELISA. Seropositive and seronegative patients revealed no significant difference in clinical features and laboratory parameters. Amongst the IgM seropositive cases, culture for leptospires was positive in 5 of 192 (2.6%), MAT in 50 of 138 (36.23%), PCR from blood and urine in 10 of 115 (8.7%) and 10 of 38 (26.31%) cases, respectively. In Leptospira spp. positive patients co-infections with viral hepatitis E, malaria and dengue fever were diagnosed in 27 cases. INTERPRETATION & CONCLUSIONS The overall seropositivity for leptospirosis was 26.9 per cent in our study. A decreasing trend in seropositivity was observed in recent years. Co-infections with malaria, dengue, hepatitis A and E were also seen. Since leptospirosis is a treatable disease, correct and rapid diagnosis may help in effective management of patients.
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Affiliation(s)
- R. Chaudhry
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India,Reprint requests: Dr Rama Chaudhry, Department of Microbiology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110 029, India e-mail: ,
| | - A. Das
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - M.M. Premlatha
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - A. Choudhary
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - B.K. Chourasia
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - D.S. Chandel
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - A.B. Dey
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
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Boccalini S, Pellegrino E, Tiscione E, Pesavento G, Bechini A, Levi M, Rapi S, Mercurio S, Mannelli F, Peruzzi M, Berardi C, Bonanni P. Sero-epidemiology of hepatitis B markers in the population of Tuscany, Central Italy, 20 years after the implementation of universal vaccination. Hum Vaccin Immunother 2013; 9:636-41. [PMID: 23354158 DOI: 10.4161/hv.23259] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Italy was one of the first industrialized countries to introduce a program of universal vaccination against hepatitis B in 1991. Twenty years later we verified the impact of universal immunisation on the epidemiology of hepatitis B infection by analyzing the prevalence of specific viral markers (anti-HBs, anti-HBc and HBsAg). The ELISA tests were performed on residual blood samples collected by 0.05% of the resident population aged 1-50 years in Tuscany (Italy). About 63% of subjects aged < 30 years were anti-HBs positive compared to about 25% in older subjects, without differences between genders. About 22% of subjects over 40 years were anti-HBc-positive compared to 5% in the younger age groups. The number of HBsAg-positive subjects was almost 10 fold higher in the unvaccinated age groups than in the cohorts involved in the universal vaccination program. The results of our study show the persisting high anti-HBs reactivity in vaccinated cohorts, while HBV markers related to natural exposure or persistent infection remain remarkably higher in older age groups. This sero-epidemiological study supports with prevalence data the downward incidence trend of acute hepatitis B highlighted by epidemiological surveillance systems, and corroborates the forecast for elimination of hepatitis B in Italy in a few decades.
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Affiliation(s)
- Sara Boccalini
- Department of Health Sciences; University of Florence; Florence, Italy
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