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Li F, Feng Y, Liu X, Hao J, Wang D, Hu H, Song C, Hu J, Zhao Q, Liang H, Liao L, Ruan Y, Xing H. HBV and HCV Co-Infection in Chinese Newly Diagnosed HIV+ Subjects in 2015 and 2023: A Cross-Sectional Study. Pathogens 2024; 13:367. [PMID: 38787219 PMCID: PMC11124262 DOI: 10.3390/pathogens13050367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/10/2024] [Accepted: 04/12/2024] [Indexed: 05/25/2024] Open
Abstract
With shared routes of transmission, HBV and HCV co-infection are estimated to occur more in subjects with HIV. This study aimed to characterize and describe the prevalence of HBV and HCV co-infections in a cohort of newly diagnosed HIV+ subjects living in China. We conducted a cross-sectional study among newly diagnosed HIV+ subjects aged 18-100 who participated in surveys on the national HIV molecular epidemiology in 2015 and 2023. (The epidemiological table survey is located in the national database alongside serologic testing). The chi-square test was used to identify changes in infections between the studying populations in 2015 and 2023, and conditional logistic regression models were fit to identify risk factors for each co-infection. Among the 11,024 newly diagnosed HIV+ subjects who were surveyed (n = 4501 in 2015; n = 6523 in 2023), the prevalence of HBV, HCV, and HBV/HCV in 2023 was lower than that in 2015, respectively. No decrease was observed in HCV co-infection in men who had sex with men (MSM) in North China, Northeast China, and East China. Increasing recognition among those at high risk of heterosexual transmission and those with low educational backgrounds is paramount to the prevention and control of HIV/HBV/HCV infections.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Hui Xing
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; (F.L.); (Y.F.); (X.L.); (J.H.); (D.W.); (H.H.); (C.S.); (J.H.); (Q.Z.); (H.L.); (L.L.); (Y.R.)
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2
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Millar J, Cromhout GZL, Mchunu N, Bengu N, Ndung’u T, Goulder PJ, Matthews PC, McNaughton AL. Hepatitis B Virus Prevalence and Mother-to-Child Transmission Risk in an HIV Early Intervention Cohort in KwaZulu-Natal, South Africa. Open Forum Infect Dis 2023; 10:ofad366. [PMID: 37547854 PMCID: PMC10400149 DOI: 10.1093/ofid/ofad366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 07/13/2023] [Indexed: 08/08/2023] Open
Abstract
Background HIV and hepatitis B virus (HBV) prevalence are both high in KwaZulu-Natal, South Africa. HIV coinfection negatively affects HBV prognosis and can increase the likelihood of HBV mother-to-child transmission (MTCT). In an early HIV infant treatment intervention cohort of HIV-transmitting mother-child pairs in KwaZulu-Natal, we characterized maternal HBV prevalence and screened infants at risk. Methods Infants were treated for HIV MTCT at birth, and combination regimens incidentally active against HBV were initiated within 21 days. Maternal samples (N = 175) were screened at birth for HBV infection (HBV surface antigen [HBsAg]), exposure to HBV (HBV anti-core IgG), and vaccination responses (HBV anti-S positive without other HBV markers). Infants of mothers who were HBV positive were screened for HBsAg at 1 and 12 months. Results Evidence of HBV infection was present in 8.6% (n = 15) of maternal samples. Biomarkers for HBV exposure were present in 31.4% (n = 55). Evidence of HBV vaccination was uncommon in mothers (8.0%; n = 14). Despite prescription of antiretroviral therapy (ART) active against HBV, HBV DNA was detectable in 46.7% (7/15) of mothers who were HBsAg positive. Three mothers had HBV viral loads >5.3 log10 IU/mL, making them high risk for HBV MTCT. Screening of available infant samples at 1 month (n = 14) revealed no cases of HBV MTCT. At 12 months, we identified 1 HBV infection (1/13), and serologic evidence of vaccination was present in 53.8% (7/13) of infants. Discussion This vulnerable cohort of HIV-transmitting mothers had a high prevalence of undiagnosed HBV. Early infant ART may have reduced the risk of MTCT in high-risk cases. Current HBV guidelines recommend ART prophylaxis, but these data underline the pressing need to increase availability of birth dose vaccines.
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Affiliation(s)
- Jane Millar
- Department of Paediatrics, University of Oxford, Oxford, UK
| | - Gabriela Z L Cromhout
- HIV Pathogenesis Programme, The Doris Duke Medical Research Institute, University of KwaZulu Natal, Durban, South Africa
- Department of Paediatrics and Child Health, University of KwaZulu Natal, Durban, South Africa
| | - Noxolo Mchunu
- HIV Pathogenesis Programme, The Doris Duke Medical Research Institute, University of KwaZulu Natal, Durban, South Africa
| | - Nomonde Bengu
- HIV Pathogenesis Programme, The Doris Duke Medical Research Institute, University of KwaZulu Natal, Durban, South Africa
- Department of Paediatrics, Queen Nandi Regional Hospital, Empangeni, South Africa
| | - Thumbi Ndung’u
- HIV Pathogenesis Programme, The Doris Duke Medical Research Institute, University of KwaZulu Natal, Durban, South Africa
- Africa Health Research Institute, Durban, South Africa
- Division of Infection and Immunity, University College London, London, UK
| | | | - Philippa C Matthews
- Division of Infection and Immunity, University College London, London, UK
- The Francis Crick Institute, London, UK
- Department of Infectious Diseases, University College London Hospital, London, UK
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3
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Matthews PC, Ocama P, Wang S, El-Sayed M, Turkova A, Ford D, Torimiro J, Garcia Ferreira AC, Espinosa Miranda A, De La Hoz Restrepo FP, Seremba E, Mbu R, Pan CQ, Razavi H, Dusheiko G, Spearman CW, Hamid S. Enhancing interventions for prevention of mother-to-child- transmission of hepatitis B virus. JHEP Rep 2023; 5:100777. [PMID: 37554925 PMCID: PMC10405098 DOI: 10.1016/j.jhepr.2023.100777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 08/10/2023] Open
Abstract
Prevention of mother-to-child transmission of hepatitis B virus (HBV) infection is a cornerstone of efforts to support progress towards elimination of viral hepatitis. Current guidelines recommend maternal screening, antiviral therapy during the third trimester of high-risk pregnancies, universal and timely HBV birth dose vaccination, and post-exposure prophylaxis with hepatitis B immunoglobulin for selected neonates. However, serological and molecular diagnostic testing, treatment and HBV vaccination are not consistently deployed, particularly in many high endemicity settings, and models predict that global targets for reduction in paediatric incidence will not be met by 2030. In this article, we briefly summarise the evidence for current practice and use this as a basis to discuss areas in which prevention of mother-to-child transmission can potentially be enhanced. By reducing health inequities, enhancing pragmatic use of resources, filling data gaps, developing advocacy and education, and seeking consistent investment from multilateral agencies, significant advances can be made to further reduce vertical transmission events, with wide health, societal and economic benefits.
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Affiliation(s)
- Philippa C. Matthews
- The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- Division of Infection and Immunity, University College London, Gower St, London WC1E 6BT, UK
- Department of Infection, University College London Hospitals, 235 Euston Rd, London NW1 2BU, UK
| | - Ponsiano Ocama
- Department of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Su Wang
- Cooperman Barnabas Medical Center, Florham Park, NJ, USA
- Hepatitis B Foundation, Doylestown, PA, USA
| | - Manal El-Sayed
- Department of Paediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Anna Turkova
- Medical Research Council Clinical Trials Unit, University College London, 90 High Holborn, London WC1V 6LJ, UK
| | - Deborah Ford
- Medical Research Council Clinical Trials Unit, University College London, 90 High Holborn, London WC1V 6LJ, UK
| | - Judith Torimiro
- Chantal Biya International Reference Centre for Research on Prevention and Management of HIV/AIDS (CIRCB), Yaounde, Cameroon
- Faculty of Medicine and Biomedical Sciences, University of Yaounde, Yaounde, Cameroon
| | - Ana Cristina Garcia Ferreira
- Ministry of Health, Health Surveillance Department, Department of Chronic Diseases and Sexually Transmitted Infections, SRTVN Quadra 701, Lote D, PO700 Building, CEP: 70719-040, Brasília/DF, Brazil
| | - Angélica Espinosa Miranda
- Ministry of Health, Health Surveillance Department, Department of Chronic Diseases and Sexually Transmitted Infections, SRTVN Quadra 701, Lote D, PO700 Building, CEP: 70719-040, Brasília/DF, Brazil
| | | | - Emmanuel Seremba
- Department of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Robinson Mbu
- Faculty of Medicine and Biomedical Sciences, University of Yaounde, Yaounde, Cameroon
| | - Calvin Q. Pan
- Division of Gastroenterology and Hepatology, NYU Langone Health, NYU Grossman School of Medicine, NY, USA
| | - Homie Razavi
- Center for Disease Analysis Foundation, 1120 W South Boulder Rd Suite 102, Lafayette, CO 80026, USA
| | - Geoffrey Dusheiko
- Liver Unit, King’s College Hospital, Denmark Hill, London SE5 9RS, UK
| | - C. Wendy Spearman
- Division of Hepatology, Department of Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
| | - Saeed Hamid
- Department of Medicine, Aga Khan University, Karachi, Pakistan
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4
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Martyn E, Eisen S, Longley N, Harris P, Surey J, Norman J, Brown M, Sultan B, Maponga TG, Iwuji C, Flanagan S, Ghosh I, Story A, Matthews PC. The forgotten people: Hepatitis B virus (HBV) infection as a priority for the inclusion health agenda. eLife 2023; 12:e81070. [PMID: 36757862 PMCID: PMC9910830 DOI: 10.7554/elife.81070] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 01/19/2023] [Indexed: 02/10/2023] Open
Abstract
Hepatitis B virus (HBV) infection represents a significant global health threat, accounting for 300 million chronic infections and up to 1 million deaths each year. HBV disproportionately affects people who are under-served by health systems due to social exclusion, and can further amplify inequities through its impact on physical and mental health, relationship with stigma and discrimination, and economic costs. The 'inclusion health' agenda focuses on excluded and vulnerable populations, who often experience barriers to accessing healthcare, and are under-represented by research, resources, interventions, advocacy, and policy. In this article, we assimilate evidence to establish HBV on the inclusion health agenda, and consider how this view can inform provision of better approaches to diagnosis, treatment, and prevention. We suggest approaches to redress the unmet need for HBV interventions among excluded populations as an imperative to progress the global goal for the elimination of viral hepatitis as a public health threat.
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Affiliation(s)
- Emily Martyn
- The Francis Crick InstituteLondonUnited Kingdom
- London School of Hygiene & Tropical MedicineLondonUnited Kingdom
- Hospital for Tropical Diseases, Division of Infection, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
| | - Sarah Eisen
- Hospital for Tropical Diseases, Division of Infection, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
| | - Nicky Longley
- London School of Hygiene & Tropical MedicineLondonUnited Kingdom
- Hospital for Tropical Diseases, Division of Infection, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
- Department of Infectious Diseases, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
| | - Philippa Harris
- Find & Treat Service, Division of Infection, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
| | - Julian Surey
- Find & Treat Service, Division of Infection, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
- Institute of Global Health, University College LondonLondonUnited Kingdom
- Universidad Autonoma de Madrid, Ciudad Universitaria de CantoblancoMadridSpain
| | - James Norman
- Find & Treat Service, Division of Infection, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
| | - Michael Brown
- London School of Hygiene & Tropical MedicineLondonUnited Kingdom
- Department of Infectious Diseases, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
- Find & Treat Service, Division of Infection, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
| | - Binta Sultan
- Find & Treat Service, Division of Infection, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
- Mortimer Market Centre, Central and North London NHS Foundation TrustLondonUnited Kingdom
| | - Tongai G Maponga
- Stellenbosch University, Faculty of Medicine and Health SciencesTygerbergSouth Africa
| | - Collins Iwuji
- Department of Global Health, Brighton and Sussex Medical School, University of SussexBrightonUnited Kingdom
- Africa Health Research InstituteDurban, KwaZulu-NatalSouth Africa
| | - Stuart Flanagan
- Mortimer Market Centre, Central and North London NHS Foundation TrustLondonUnited Kingdom
| | - Indrajit Ghosh
- Find & Treat Service, Division of Infection, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
- Mortimer Market Centre, Central and North London NHS Foundation TrustLondonUnited Kingdom
| | - Alistair Story
- Find & Treat Service, Division of Infection, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
- Collaborative Centre for Inclusion Health, University College LondonLondonUnited Kingdom
| | - Philippa C Matthews
- The Francis Crick InstituteLondonUnited Kingdom
- Department of Infectious Diseases, University College London Hospitals NHS Foundation TrustLondonUnited Kingdom
- Mortimer Market Centre, Central and North London NHS Foundation TrustLondonUnited Kingdom
- Division of Infection and Immunity, University College LondonLondonUnited Kingdom
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5
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Maponga TG, McNaughton AL, van Schalkwyk M, Hugo S, Nwankwo C, Taljaard J, Mokaya J, Smith DA, van Vuuren C, Goedhals D, Gabriel S, Andersson MI, Preiser W, van Rensburg C, Matthews PC. Treatment advantage in HBV/HIV coinfection compared to HBV monoinfection in a South African cohort. J Infect 2020; 81:121-130. [PMID: 32360882 PMCID: PMC7308798 DOI: 10.1016/j.jinf.2020.04.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 04/17/2020] [Accepted: 04/26/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVES Prompted by international targets for elimination of hepatitis B virus (HBV), we set out to characterise individuals with HBV monoinfection vs. those coinfected with HBV/HIV, to evaluate the impact of therapy and to guide improvements in clinical care. METHODS We report observational data from a real world cross-sectional cohort of 115 adults with chronic hepatitis B infection (CHB), at a university hospital in Cape Town, South Africa. HIV coinfection was present in 39 (34%) subjects. We recorded cross-sectional demographic, clinical and laboratory data. RESULTS Compared to those with HIV coinfection, HBV monoinfected adults were less likely to be HBeAg-positive (p=0.01), less likely to have had assessment with elastography (p<0.0001), and less likely to be on antiviral treatment (p<0.0001); they were more likely to have detectable HBV viraemia (p=0.04), and more likely to have features of liver disease including moderate/severe thrombocytopaenia (p=0.007), elevated bilirubin (p=0.004), and elevated APRI score (p=0.02). Three cases of hepatocellular carcinoma all arose in HBV monoinfection. CONCLUSIONS Our data demonstrate that individuals with HBV monoinfection may be disadvantaged compared to those with HIV coinfection, highlighting potential systematic inequities in referral, monitoring and treatment.
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Affiliation(s)
- Tongai G Maponga
- Division of Medical Virology, Stellenbosch University / National Health Laboratory Service Tygerberg, Cape Town, South Africa
| | - Anna L McNaughton
- Nuffield Department of Medicine, University of Oxford, Medawar Building, South Parks Road, Oxford, UK
| | - Marije van Schalkwyk
- Division of Infectious Diseases, Department of Medicine, Stellenbosch University / Tygerberg Academic Hospital, Cape Town, South Africa
| | - Susan Hugo
- Division of Infectious Diseases, Department of Medicine, Stellenbosch University / Tygerberg Academic Hospital, Cape Town, South Africa
| | - Chikezie Nwankwo
- Division of Gastroenterology, Department of Medicine, Stellenbosch University / Tygerberg Academic Hospital, Cape Town, South Africa
| | - Jantjie Taljaard
- Division of Infectious Diseases, Department of Medicine, Stellenbosch University / Tygerberg Academic Hospital, Cape Town, South Africa
| | - Jolynne Mokaya
- Nuffield Department of Medicine, University of Oxford, Medawar Building, South Parks Road, Oxford, UK
| | - David A Smith
- Nuffield Department of Medicine, University of Oxford, Medawar Building, South Parks Road, Oxford, UK
| | - Cloete van Vuuren
- Division of Infectious Diseases, Department of Internal Medicine, Faculty of Health Sciences, University of the Free State, Bloemfontein, South Africa
| | - Dominique Goedhals
- Division of Virology, Universitas Academic Laboratories, National Health Laboratory Service/University of the Free State, Bloemfontein, South Africa
| | - Shiraaz Gabriel
- Division of Gastroenterology, Department of Medicine, Stellenbosch University / Tygerberg Academic Hospital, Cape Town, South Africa
| | - Monique I Andersson
- Division of Medical Virology, Stellenbosch University / National Health Laboratory Service Tygerberg, Cape Town, South Africa; Department of Microbiology and Infectious Diseases, Oxford University Hospitals, John Radcliffe Hospital, Headington, Oxford, UK
| | - Wolfgang Preiser
- Division of Medical Virology, Stellenbosch University / National Health Laboratory Service Tygerberg, Cape Town, South Africa
| | - Christo van Rensburg
- Division of Gastroenterology, Department of Medicine, Stellenbosch University / Tygerberg Academic Hospital, Cape Town, South Africa
| | - Philippa C Matthews
- Nuffield Department of Medicine, University of Oxford, Medawar Building, South Parks Road, Oxford, UK; Department of Microbiology and Infectious Diseases, Oxford University Hospitals, John Radcliffe Hospital, Headington, Oxford, UK; NIHR British Research Council, John Radcliffe Hospital, Headington, Oxford, UK.
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6
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Kretzschmar MEE, van der Sande MAB. Hepatitis B prevention: Can we learn from the response to HIV/AIDS? PLoS Med 2020; 17:e1003109. [PMID: 32315316 PMCID: PMC7173715 DOI: 10.1371/journal.pmed.1003109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Mirjam Kretzschmar and Marianne van der Sande discuss the accompanying research study by Anna McNaughton and colleagues on strategies to reduce the burden of hepatitis B in African countries.
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Affiliation(s)
- Mirjam E. E. Kretzschmar
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Centre for Infectious Disease Control, National Institute of Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Marianne A. B. van der Sande
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Department Public Health, Institute of Tropical Medicine, Antwerp, Belgium
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7
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McNaughton AL, Lourenço J, Bester PA, Mokaya J, Lumley SF, Obolski U, Forde D, Maponga TG, Katumba KR, Goedhals D, Gupta S, Seeley J, Newton R, Ocama P, Matthews PC. Hepatitis B virus seroepidemiology data for Africa: Modelling intervention strategies based on a systematic review and meta-analysis. PLoS Med 2020; 17:e1003068. [PMID: 32315297 PMCID: PMC7173646 DOI: 10.1371/journal.pmed.1003068] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 03/13/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND International Sustainable Development Goals (SDGs) for elimination of hepatitis B virus (HBV) infection set ambitious targets for 2030. In African populations, infant immunisation has been fundamental to reducing incident infections in children, but overall population prevalence of chronic hepatitis B (CHB) infection remains high. In high-prevalence populations, adult catch-up vaccination has sometimes been deployed, but an alternative Test and Treat (T&T) approach could be used as an intervention to interrupt transmission. Universal T&T has not been previously evaluated as a population intervention for HBV infection, despite high-profile data supporting its success with human immunodeficiency virus (HIV). METHODS AND FINDINGS We set out to investigate the relationship between prevalence of HBV infection and exposure in Africa, undertaking a systematic literature review in November 2019. We identified published seroepidemiology data representing the period 1995-2019 from PubMed and Web of Science, including studies of adults that reported prevalence of both hepatitis B surface antigen (HBsAg; prevalence of HBV infection) and antibody to hepatitis B core antigen (anti-HBc; prevalence of HBV exposure). We identified 96 studies representing 39 African countries, with a median cohort size of 370 participants and a median participant age of 34 years. Using weighted linear regression analysis, we found a strong relationship between the prevalence of infection (HBsAg) and exposure (anti-HBc) (R2 = 0.45, p < 0.001). Region-specific differences were present, with estimated CHB prevalence in Northern Africa typically 30% to 40% lower (p = 0.007) than in Southern Africa for statistically similar exposure rates, demonstrating the need for intervention strategies to be tailored to individual settings. We applied a previously published mathematical model to investigate the effect of interventions in a high-prevalence setting. The most marked and sustained impact was projected with a T&T strategy, with a predicted reduction of 33% prevalence by 20 years (95% CI 30%-37%) and 62% at 50 years (95% CI 57%-68%), followed by routine neonatal vaccination and prevention of mother to child transmission (PMTCT; at 100% coverage). In contrast, the impact of catch-up vaccination in adults had a negligible and transient effect on population prevalence. The study is constrained by gaps in the published data, such that we could not model the impact of antiviral therapy based on stratification by specific clinical criteria and our model framework does not include explicit age-specific or risk-group assumptions regarding force of transmission. CONCLUSIONS The unique data set collected in this study highlights how regional epidemiology data for HBV can provide insights into patterns of transmission, and it provides an evidence base for future quantitative research into the most effective local interventions. In combination with robust neonatal immunisation programmes, ongoing PMTCT efforts, and the vaccination of high-risk groups, diagnosing and treating HBV infection is likely to be of most impact in driving advances towards elimination targets at a population level.
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Affiliation(s)
- Anna L. McNaughton
- Nuffield Department of Medicine, University of Oxford, Medawar Building for Pathogen Research, Oxford, United Kingdom
| | - José Lourenço
- Department of Zoology, University of Oxford, Medawar Building for Pathogen Research, Oxford, United Kingdom
| | - Phillip Armand Bester
- Division of Virology, University of the Free State and National Health Laboratory Service, Bloemfontein, South Africa
| | - Jolynne Mokaya
- Nuffield Department of Medicine, University of Oxford, Medawar Building for Pathogen Research, Oxford, United Kingdom
| | - Sheila F. Lumley
- Nuffield Department of Medicine, University of Oxford, Medawar Building for Pathogen Research, Oxford, United Kingdom
- Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headington, Oxford, United Kingdom
| | - Uri Obolski
- School of Public Health, Tel Aviv University, Tel Aviv, Israel
- Porter School of the Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Donall Forde
- Nuffield Department of Medicine, Nuffield Department of Medicine Research Building, Headington, Oxford, United Kingdom
| | - Tongai G. Maponga
- Division of Medical Virology, University of Stellenbosch, Faculty of Medicine and Health Sciences, Cape Town, South Africa
| | - Kenneth R. Katumba
- Medical Research Council/Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, Entebbe, Uganda
| | - Dominique Goedhals
- Division of Virology, University of the Free State and National Health Laboratory Service, Bloemfontein, South Africa
| | - Sunetra Gupta
- Department of Zoology, University of Oxford, Medawar Building for Pathogen Research, Oxford, United Kingdom
| | - Janet Seeley
- Medical Research Council/Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, Entebbe, Uganda
- Faculty of Global Health and Development, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Robert Newton
- Medical Research Council/Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, Entebbe, Uganda
- Department of Health Sciences, University of York, York, United Kingdom
| | - Ponsiano Ocama
- Makerere University College of Health Sciences, Kampala, Uganda
| | - Philippa C. Matthews
- Nuffield Department of Medicine, University of Oxford, Medawar Building for Pathogen Research, Oxford, United Kingdom
- Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headington, Oxford, United Kingdom
- * E-mail:
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8
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Lourenço J, Obolski U, Swarthout TD, Gori A, Bar-Zeev N, Everett D, Kamng'ona AW, Mwalukomo TS, Mataya AA, Mwansambo C, Banda M, Gupta S, French N, Heyderman RS. Determinants of high residual post-PCV13 pneumococcal vaccine-type carriage in Blantyre, Malawi: a modelling study. BMC Med 2019; 17:219. [PMID: 31801542 PMCID: PMC6894346 DOI: 10.1186/s12916-019-1450-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 10/24/2019] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND In November 2011, Malawi introduced the 13-valent pneumococcal conjugate vaccine (PCV13) into the routine infant schedule. Four to 7 years after introduction (2015-2018), rolling prospective nasopharyngeal carriage surveys were performed in the city of Blantyre. Carriage of Streptococcus pneumoniae vaccine serotypes (VT) remained higher than reported in high-income countries, and impact was asymmetric across age groups. METHODS A dynamic transmission model was fit to survey data using a Bayesian Markov-chain Monte Carlo approach, to obtain insights into the determinants of post-PCV13 age-specific VT carriage. RESULTS Accumulation of naturally acquired immunity with age and age-specific transmission potential were both key to reproducing the observed data. VT carriage reduction peaked sequentially over time, earlier in younger and later in older age groups. Estimated vaccine efficacy (protection against carriage) was 66.87% (95% CI 50.49-82.26%), similar to previous estimates. Ten-year projected vaccine impact (VT carriage reduction) among 0-9 years old was lower than observed in other settings, at 76.23% (CI 95% 68.02-81.96%), with sensitivity analyses demonstrating this to be mainly driven by a high local force of infection. CONCLUSIONS There are both vaccine-related and host-related determinants of post-PCV13 pneumococcal VT transmission in Blantyre with vaccine impact determined by an age-specific, local force of infection. These findings are likely to be generalisable to other Sub-Saharan African countries in which PCV impact on carriage (and therefore herd protection) has been lower than desired, and have implications for the interpretation of post-PCV carriage studies and future vaccination programs.
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Affiliation(s)
- J Lourenço
- Department of Zoology, University of Oxford, Oxford, UK.
| | - U Obolski
- School of Public Health, Tel Aviv University, Tel Aviv, Israel.,Porter School of the Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel
| | - T D Swarthout
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi.,Clinical Sciences Department, Liverpool School of Tropical Medicine, Liverpool, UK
| | - A Gori
- NIHR Mucosal Pathogens Research Unit, Division of Infection & Immunity, University College London, London, UK
| | - N Bar-Zeev
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi.,Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, USA
| | - D Everett
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi.,The Queens Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - A W Kamng'ona
- Department of Biomedical Sciences, College of Medicine, University of Malawi, Blantyre, Malawi
| | - T S Mwalukomo
- Department of Medicine, College of Medicine, University of Malawi, Blantyre, Malawi
| | - A A Mataya
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi
| | | | - M Banda
- Ministry of Education, Blantyre, Malawi
| | - S Gupta
- Department of Zoology, University of Oxford, Oxford, UK
| | - N French
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi.,Centre for Global Vaccine Research, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
| | - R S Heyderman
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi.,NIHR Mucosal Pathogens Research Unit, Division of Infection & Immunity, University College London, London, UK
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9
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Mokaya J, Burn EAO, Tamandjou CR, Goedhals D, Barnes EJ, Andersson M, Pinedo-Villanueva R, Matthews PC. Modelling cost-effectiveness of tenofovir for prevention of mother to child transmission of hepatitis B virus (HBV) infection in South Africa. BMC Public Health 2019; 19:829. [PMID: 31242901 PMCID: PMC6595556 DOI: 10.1186/s12889-019-7095-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 05/31/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND International sustainable development goals for the elimination of viral hepatitis as a public health problem by 2030 highlight the need to optimize strategies for prevention, diagnosis and treatment of hepatitis B virus (HBV) infection. An important priority for Africa is to have affordable, accessible and sustainable prevention of mother to child transmission (PMTCT) programmes, delivering screening and treatment for antenatal women and implementing timely administration of HBV vaccine for their babies. METHODS We developed a decision-analytic model simulating 10,000 singleton pregnancies to assess the cost-effectiveness of three possible strategies for deployment of tenofovir in pregnancy, in combination with routine infant vaccination: S1: no screening nor antiviral therapy; S2: screening and antiviral prophylaxis for all women who test HBsAg-positive; S3: screening for HBsAg, followed by HBeAg testing and antiviral prophylaxis for women who are HBsAg-positive and HBeAg-positive. Our outcome was cost per infant HBV infection avoided and the analysis followed a healthcare perspective. RESULTS Based on 10,000 pregnancies, S1 predicts 45 infants would be HBV-infected at six months of age, compared to 21 and 28 infants in S2 and S3, respectively. Relative to S1, S2 had an incremental cost of $3940 per infection avoided. S3 led to more infections and higher costs. CONCLUSION Given the long-term health burden for individuals and economic burden for society associated with chronic HBV infection, screening pregnant women and providing tenofovir for all who test HBsAg+ may be a cost-effective strategy for South Africa and other low/middle income settings.
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MESH Headings
- Adult
- Antiviral Agents/therapeutic use
- Child
- Cost-Benefit Analysis
- Developing Countries
- Female
- Hepatitis B/blood
- Hepatitis B/diagnosis
- Hepatitis B/drug therapy
- Hepatitis B/virology
- Hepatitis B Surface Antigens/blood
- Hepatitis B Vaccines/administration & dosage
- Hepatitis B e Antigens/blood
- Hepatitis B virus/immunology
- Hepatitis B, Chronic/blood
- Hepatitis B, Chronic/diagnosis
- Hepatitis B, Chronic/drug therapy
- Hepatitis B, Chronic/virology
- Humans
- Infant
- Infectious Disease Transmission, Vertical/prevention & control
- Mass Screening
- Models, Biological
- Pregnancy
- Pregnancy Complications, Infectious/blood
- Pregnancy Complications, Infectious/diagnosis
- Pregnancy Complications, Infectious/drug therapy
- Pregnancy Complications, Infectious/virology
- South Africa
- Tenofovir/economics
- Tenofovir/therapeutic use
- Vaccination
- Young Adult
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Affiliation(s)
- Jolynne Mokaya
- Nuffield Department of Medicine, Medawar Building, South Parks Road, Oxford, OX1 3SY, UK
| | - Edward A O Burn
- Centre for Statistics in Medicine, University of Oxford, Oxford, OX3 7LD, UK
| | - Cynthia Raissa Tamandjou
- Division of Medical Virology, Faculty of Medicine and Health Sciences, Stellenbosch University, Francie van Zijl Drive, Tygerberg, 8000, Cape Town, Republic of South Africa
| | - Dominique Goedhals
- Division of Virology, University of the Free State/National Health Laboratory Service, PO Box 339(G23), Bloemfontein, 9300, Republic of South Africa
| | - Eleanor J Barnes
- Nuffield Department of Medicine, Medawar Building, South Parks Road, Oxford, OX1 3SY, UK
- Department of Hepatology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DU, UK
- National Institute of Health Research, Oxford Biomedical Research Centre, John Radcliffe Hospital, Headley Way, Headington, Oxford, OX3 9DU, UK
| | - Monique Andersson
- Division of Medical Virology, Faculty of Medicine and Health Sciences, Stellenbosch University, Francie van Zijl Drive, Tygerberg, 8000, Cape Town, Republic of South Africa
- Department of Microbiology and Infectious Diseases, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DU, UK
| | | | - Philippa C Matthews
- Nuffield Department of Medicine, Medawar Building, South Parks Road, Oxford, OX1 3SY, UK.
- National Institute of Health Research, Oxford Biomedical Research Centre, John Radcliffe Hospital, Headley Way, Headington, Oxford, OX3 9DU, UK.
- Department of Microbiology and Infectious Diseases, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DU, UK.
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10
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Electronic Health Informatics Data To Describe Clearance Dynamics of Hepatitis B Surface Antigen (HBsAg) and e Antigen (HBeAg) in Chronic Hepatitis B Virus Infection. mBio 2019; 10:mBio.00699-19. [PMID: 31239374 PMCID: PMC6593400 DOI: 10.1128/mbio.00699-19] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Advances in the diagnosis, monitoring, and treatment of hepatitis B virus (HBV) infection are urgently required if we are to meet international targets for elimination by the year 2030. Here we demonstrate how routine clinical data can be harnessed through an unbiased electronic pipeline, showcasing the significant potential for amassing large clinical data sets that can help to inform advances in patient care and provide insights that may help to inform new cure strategies. Our cohort from a large UK hospital includes adults from diverse ethnic groups that have previously been underrepresented in the literature. By tracking two protein biomarkers that are used to monitor chronic HBV infection, we provide new insights into the timelines of HBV clearance, both on and off treatment. These results contribute to improvements in individualized clinical care and may provide important clues into the immune events that underpin disease control. HBsAg and HBeAg have gained traction as biomarkers of control and clearance during chronic hepatitis B virus infection (CHB). Improved understanding of the clearance correlates of these proteins could help inform improvements in patient-stratified care and advance insights into the underlying mechanisms of disease control, thus underpinning new cure strategies. We collected electronic clinical data via an electronic pipeline supported by the National Institute for Health Research Health Informatics Collaborative (NIHR HIC), adopting an unbiased approach to the generation of a robust longitudinal data set for adults testing HBsAg positive from a large UK teaching hospital over a 6-year period (2011 to 2016 inclusive). Of 553 individuals with CHB, longitudinal data were available for 319, representing >107,000 weeks of clinical follow-up. Among these 319 individuals, 13 (4%) cleared HBsAg completely. Among these 13, the HBsAg clearance rate in individuals on nucleos(t)ide analogue (NA) therapy (n = 4 [31%]; median clearance time,150 weeks) was similar to that in individuals not on NA therapy (n = 9 [69%]; median clearance time, 157 weeks). Those who cleared HBsAg were significantly older and less likely to be on NA therapy than nonclearers (P = 0.003 and P = 0.001, respectively). Chinese ethnicity was associated with HBeAg positivity (P = 0.025). HBeAg clearance occurred in individuals both on NA therapy (n = 24; median time, 49 weeks) and off NA therapy (n = 19; median time, 52 weeks). Improved insights into the dynamics of these biomarkers can underpin better prognostication and patient-stratified care. Our systematized approach to data collection paves the way for scaling up efforts to harness clinical data to address research questions and support improvements in clinical care.
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11
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McNaughton AL, Roberts HE, Bonsall D, de Cesare M, Mokaya J, Lumley SF, Golubchik T, Piazza P, Martin JB, de Lara C, Brown A, Ansari MA, Bowden R, Barnes E, Matthews PC. Illumina and Nanopore methods for whole genome sequencing of hepatitis B virus (HBV). Sci Rep 2019; 9:7081. [PMID: 31068626 PMCID: PMC6506499 DOI: 10.1038/s41598-019-43524-9] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 04/26/2019] [Indexed: 12/28/2022] Open
Abstract
Advancing interventions to tackle the huge global burden of hepatitis B virus (HBV) infection depends on improved insights into virus epidemiology, transmission, within-host diversity, drug resistance and pathogenesis, all of which can be advanced through the large-scale generation of full-length virus genome data. Here we describe advances to a protocol that exploits the circular HBV genome structure, using isothermal rolling-circle amplification to enrich HBV DNA, generating concatemeric amplicons containing multiple successive copies of the same genome. We show that this product is suitable for Nanopore sequencing as single reads, as well as for generating short-read Illumina sequences. Nanopore reads can be used to implement a straightforward method for error correction that reduces the per-read error rate, by comparing multiple genome copies combined into a single concatemer and by analysing reads generated from plus and minus strands. With this approach, we can achieve an improved consensus sequencing accuracy of 99.7% and resolve intra-sample sequence variants to form whole-genome haplotypes. Thus while Illumina sequencing may still be the most accurate way to capture within-sample diversity, Nanopore data can contribute to an understanding of linkage between polymorphisms within individual virions. The combination of isothermal amplification and Nanopore sequencing also offers appealing potential to develop point-of-care tests for HBV, and for other viruses.
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Affiliation(s)
- Anna L McNaughton
- Nuffield Department of Medicine, Medawar Building, University of Oxford, South Parks Road, Oxford, OX1 3SY, UK
| | - Hannah E Roberts
- Wellcome Centre for Human Genetics, Roosevelt Drive, Oxford, OX3 7BN, UK
| | - David Bonsall
- Nuffield Department of Medicine, Medawar Building, University of Oxford, South Parks Road, Oxford, OX1 3SY, UK
- Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DU, UK
- Big Data Institute, Old Road, Oxford, OX3 7FZ, UK
| | | | - Jolynne Mokaya
- Nuffield Department of Medicine, Medawar Building, University of Oxford, South Parks Road, Oxford, OX1 3SY, UK
| | - Sheila F Lumley
- Nuffield Department of Medicine, Medawar Building, University of Oxford, South Parks Road, Oxford, OX1 3SY, UK
- Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DU, UK
| | - Tanya Golubchik
- Wellcome Centre for Human Genetics, Roosevelt Drive, Oxford, OX3 7BN, UK
- Big Data Institute, Old Road, Oxford, OX3 7FZ, UK
| | - Paolo Piazza
- Imperial BRC Genomics Facility, Imperial College, London, UK
| | - Jacqueline B Martin
- Gastroenterology and Hepatology Clinical Trials Facility, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, OX3 9DU, UK
| | - Catherine de Lara
- Nuffield Department of Medicine, Medawar Building, University of Oxford, South Parks Road, Oxford, OX1 3SY, UK
| | - Anthony Brown
- Nuffield Department of Medicine, Medawar Building, University of Oxford, South Parks Road, Oxford, OX1 3SY, UK
| | - M Azim Ansari
- Nuffield Department of Medicine, Medawar Building, University of Oxford, South Parks Road, Oxford, OX1 3SY, UK
| | - Rory Bowden
- Wellcome Centre for Human Genetics, Roosevelt Drive, Oxford, OX3 7BN, UK
| | - Eleanor Barnes
- Nuffield Department of Medicine, Medawar Building, University of Oxford, South Parks Road, Oxford, OX1 3SY, UK
- Department of Hepatology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, OX3 9DU, UK
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, OX3 9DU, UK
| | - Philippa C Matthews
- Nuffield Department of Medicine, Medawar Building, University of Oxford, South Parks Road, Oxford, OX1 3SY, UK.
- Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Oxford, OX3 9DU, UK.
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, OX3 9DU, UK.
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