Abstract
Chronic infection with hepatitis C virus (HCV) is a global health challenge with over 75 million people affected globally. The widespread transmission of the virus in the past century has created a large infectious reservoir, especially in low- and middle-income countries (LMICs). There remain 1–2 million new HCV infections worldwide every year.
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References
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Summary Table of Landmark Literature—HCV
Summary Table of Landmark Literature—HCV
Study title and authors | Study design | Summary results | Main limitations |
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Mohd Hanafiah K, Groeger J, Flaxman AD, Wiersma ST. Hepatology. 2013;57:1333–42 | Systematic review of Medline, Embase, and Cinahl from 1980–2007 to update the global epidemiology of hepatitis C virus (HCV), which included pooled estimates from 232 articles | • Global prevalence and number of people with anti-HCV has increased from 2.3% to 2.8% and from >122 to >185 million between 1990 and 2005 • Central and East Asia and North Africa/Middle East are estimated to have high prevalence (>3.5%); South and Southeast Asia, sub-Saharan Africa, Andean, Central, and Southern Latin America, Caribbean, Oceania, Australasia, and Central, Eastern, and Western Europe have moderate prevalence (1.5–3.5%); whereas Asia Pacific, Tropical Latin America, and North America have low prevalence (<1.5%) | • Estimates are limited to available literature and some regions without robust HCV epidemiology data may have inaccurate estimates • Prevalence data included studies through 2007, which precedes major efforts to improve HCV screening, linkage to care, and treatment |
Blach S, Zeuzem S, Manns M, Altraif I, Duberg AS, Muljono DH, Waked I, Alavian SM, The Polaris Observatory HCV Collaborators. Lancet Gastroenterology Hepatology. 2017;2(3):161–176 | Systematic review followed by a country-level disease burden models using data from manuscripts published after 2013 | • Study provided updated prevalence data in the more recent era • The global prevalence of chronic HCV is estimated to be 1.0% (95% uncertainty interval 0.8–1.1) in 2015, corresponding to 71.1 million (62.5–79.4) individuals • Genotypes 1 and 3 were the most common cause of infections (44% and 25%, respectively) | • Estimates are limited to available literature and some regions without robust HCV epidemiology (especially in sub-Saharan Africa), data may have been less accurate • Inherent limitations of assumptions made by the model design may have affected the estimates that were generated |
Riou J, Aït Ahmed M, Blake A, Vozlinsky S, Brichler S, Eholié S, Boëlle PY, Fontanet A, HCV Epidemiology in Africa Group. Journal of Viral Hepatitis. 2016;23:244–55 | Systematic review with meta-analysis of HCV seroprevalence data among adults in African countries via 2000–2014 structured search of MEDLINE, AJOL, and grey literature, which included 262 studies | • Among North Africa region, HCV seroprevalence was high in Egypt at 14.7% and lowest in Libya at 1.2% • In West Africa region, highest HCV seroprevalence was in Burkina Faso at 6.1% and lowest in Senegal at 1.0% • In Middle Africa region, highest HCV seroprevalence was seen in Cameroon and Gabon at 4.9% and lowest in the Democratic Republic of Congo at 2.1% • In East Africa region, highest HCV seroprevalence was seen in Ethiopia at 2.7% and lowest in Mozambique at 1.3% • In South Africa region, overall prevalence was low overall ranging from 1.1% to 1.6% | • Estimates are limited to available literature and some regions without robust HCV epidemiology data may have inaccurate estimates |
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Goel, A., Ahmed, A., Waked, I. (2019). Clinical Epidemiology of Hepatitis C Virus. In: Wong, R., Gish, R. (eds) Clinical Epidemiology of Chronic Liver Diseases. Springer, Cham. https://doi.org/10.1007/978-3-319-94355-8_12
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