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Osiowy C, Giles E, Lowe CF, Matic N, Murphy DG, Uzicanin S, Drews SJ, O'Brien SF. Hepatitis B virus genotype surveillance in Canadian blood donors and a referred patient population, 2016-2021. Vox Sang 2024; 119:232-241. [PMID: 38141175 DOI: 10.1111/vox.13568] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/06/2023] [Accepted: 11/05/2023] [Indexed: 12/25/2023]
Abstract
BACKGROUND AND OBJECTIVES Hepatitis B virus (HBV) genotypes (A-H) have a distinct geographic distribution and are highly associated with the country of birth. Canada has experienced increased immigration over the past decade, primarily from regions where HBV is endemic. This study investigated the proportions and trends of HBV genotypes within blood donor and clinical populations of Canada over the period 2016-2021. MATERIALS AND METHODS Study samples involved two cohorts: (1) Canadian blood donors (n = 246) deferred from donation due to HBV test positivity and (2) chronic HBV patients from across Canada (clinically referred population, n = 3539). Plasma or serum was extracted, and the surface antigen and/or polymerase-coding region was amplified and sequenced to determine genotype by phylogenetic analysis. RESULTS Six (A-E, G) and eight (A-H) HBV genotypes were detected among deferred blood donors and the clinically referred population, respectively. Differences in HBV genotype proportions between the two cohorts were observed across Canada. Males comprised most of the referred population among genotypes A-E (p < 0.0001), except for genotypes B and C. The median age was younger among blood donors (36 years [range 17-72]) compared with the referred population (41 years [range 0-99]). Distinct trends of increasing (E, referred; B, blood donor) and decreasing genotype prevalence were observed over the study period. CONCLUSION HBV genotypes in Canada are highly diverse, suggesting a large immigrant population. Observed trends in genotype prevalence and proportional differences among cohorts imply shifts among the HBV-infected population of Canada, which warrants continued surveillance.
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Affiliation(s)
- Carla Osiowy
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Elizabeth Giles
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Christopher F Lowe
- St. Paul's Hospital, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Nancy Matic
- St. Paul's Hospital, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Donald G Murphy
- Laboratoire de Santé Publique du Québec, Sainte-Anne-de-Bellevue, Quebec, Canada
| | | | - Steven J Drews
- Canadian Blood Services, Edmonton, Alberta, Canada
- Division of Diagnostic and Applied Microbiology, Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
| | - Sheila F O'Brien
- Canadian Blood Services, Ottawa, Ontario, Canada
- School of Epidemiology & Public Health, University of Ottawa, Ottawa, Ontario, Canada
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O'Brien SF, Ehsani-Moghaddam B, Goldman M, Drews SJ. Prevalence of Hepatitis B in Canadian First-Time Blood Donors: Association with Social Determinants of Health. Viruses 2024; 16:117. [PMID: 38257817 PMCID: PMC11326446 DOI: 10.3390/v16010117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/03/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
Hepatitis B is transmitted sexually, by blood contact, and vertically from mother to child. Chronic hepatitis B is often seen in immigrants from higher-prevalence countries and their Canadian-born children. We assessed the relationship between hepatitis B and social determinants of health. Included were 1,539,869 first-time Canadian blood donors from April 2005 to December 2022. All donations were tested for hepatitis B markers. Logistic regression was fit with chronic hepatitis B as the dependent variable and age, sex, year, and ethnocultural composition and material deprivation quintiles as independent variables. Chronic hepatitis B prevalence was 47.5/100,000 (95% CI 41.5-53.5, years 2017-2022). Chronic hepatitis B prevalence was elevated in males, older age groups, and those living in more materially deprived and higher ethnocultural neighbourhoods. Of 212,518 donors from 2020 to 2022 with race/ethnicity data, chronic hepatitis B prevalence was highest in East Asians. The findings are consistent with infections in immigrants, acquired in their country of origin, in their Canadian-born children and in those with other risks. As blood donors are a low-risk population unaware of their infection and unlikely to seek testing, our results highlight the ongoing public health challenges of diagnosing chronic hepatitis B and treating it when appropriate.
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Affiliation(s)
- Sheila F O'Brien
- Epidemiology & Surveillance, Canadian Blood Services, Ottawa, ON K1G 4J5, Canada
- School of Epidemiology & Public Health, University of Ottawa, Ottawa, ON K1G 192, Canada
| | - Behrouz Ehsani-Moghaddam
- Epidemiology & Surveillance, Canadian Blood Services, Ottawa, ON K1G 4J5, Canada
- Centre for Studies in Primary Care, Department of Family Medicine, Queens University, Kingston, ON K7L 3N6, Canada
| | - Mindy Goldman
- Donation and Policy Studies, Canadian Blood Services, Ottawa, ON K1G 4J5, Canada
- Department of Pathology & Laboratory Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1G 192, Canada
| | - Steven J Drews
- Microbiology, Canadian Blood Services, Edmonton, AB T6G 2R8, Canada
- Department of Laboratory Medicine & Pathology, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
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Laperche S, Sauvage C, Gallian P, Jbilou S, Pouchol E, Py JY, Chabli L, Richard P, Morel P, Lot F, Tiberghien P. Human immunodeficiency virus, hepatitis C virus and hepatitis B virus incidence in blood donors from 2000 to 2020 in France: Trends and lessons from haemovigilance surveillance. Vox Sang 2023; 118:843-853. [PMID: 37694766 DOI: 10.1111/vox.13514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/03/2023] [Accepted: 08/06/2023] [Indexed: 09/12/2023]
Abstract
BACKGROUND AND OBJECTIVES Data from 21 years (2000-2020) of haemovigilance were used to assess human immunodeficiency virus (HIV), hepatitis B virus (HBV) and hepatitis C virus (HCV) incidence rates in repeat blood donors and the occurrence of transfusion-transmitted (TT) viral infections. MATERIALS AND METHODS Blood donors who converted for HIV, HCV or HBV markers within serial three-year analysis periods were included. Epidemiological and virological data were retrieved from the national epidemiological donor database and were supplemented with information on blood components and the infection status of recipients of the previous negative donation (D.N-1) of donors who seroconverted. RESULTS Incidence rates declined from 1.27 to 0.35/100,000 person-years for HIV, from 0.59 to 0.19 for HCV and from 1.66 to 0.18 for HBV. Risk factors and lookback for 232 HIV, 90 HCV and 74 HBV seroconversions were investigated. The main risk factor identified at post-donation interview was having sex with men (47.8% of males) for HIV and a sexual risk for HCV (30.6%) and HBV (37.1%). The viral loads and sequences were retrospectively tested in 191 HIV, 74 HCV and 62 HBV D.N-1 archived samples. Six (five HBV and one HIV-1) were positive all low viral loads. Two recipients were infected by red blood cells from two HBV seroconverting donors before the introduction of HBV-nucleic acid testing. CONCLUSION HIV, HCV and HBV incidence rates in blood donors declined over the two past decades in France. There is a very small risk of a blood component that tests negative entering the blood supply resulting in TT infections, especially after introduction of molecular assays in donor screening.
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Affiliation(s)
- Syria Laperche
- Etablissement Français du Sang, La Plaine Saint-Denis, France
- National Reference Centre for infectious risks in transfusion, Institut National de la Transfusion Sanguine, Paris, France
| | | | - Pierre Gallian
- Etablissement Français du Sang, La Plaine Saint-Denis, France
| | - Saadia Jbilou
- Etablissement Français du Sang, La Plaine Saint-Denis, France
| | - Elodie Pouchol
- Etablissement Français du Sang, La Plaine Saint-Denis, France
| | - Jean Yves Py
- Etablissement Français du Sang, La Plaine Saint-Denis, France
| | - Lila Chabli
- Etablissement Français du Sang, La Plaine Saint-Denis, France
| | - Pascale Richard
- Etablissement Français du Sang, La Plaine Saint-Denis, France
| | - Pascal Morel
- Etablissement Français du Sang, La Plaine Saint-Denis, France
- UMR RIGHT 1098, Université de Franche-Comté INSERM, Etablissement Français du Sang, Besançon, France
| | | | - Pierre Tiberghien
- Etablissement Français du Sang, La Plaine Saint-Denis, France
- UMR RIGHT 1098, Université de Franche-Comté INSERM, Etablissement Français du Sang, Besançon, France
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Candotti D. Viruses Special Issue "Transfusion-Transmitted Viral Infections". Viruses 2022; 15:86. [PMID: 36680126 PMCID: PMC9862417 DOI: 10.3390/v15010086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 12/31/2022] Open
Abstract
Blood transfusion is a life-saving treatment that requires patients to have access to safe and adequate blood products that are available in a timely manner [...].
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Affiliation(s)
- Daniel Candotti
- Department of Virology, Henri Mondor Hospital, Paris-Est University, INSERM U955-IMRB-Team 18, 51 Avenue du Maréchal de Lattre de Tassigny, 94010 Créteil, France
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