Global prevalence and genotype distribution of hepatitis C virus infection in 2015: A modelling study

Sarah Blach, Stefan Zeuzem, Michael Manns, Ibrahim Altraif, Ann Sofi Duberg, David H. Muljono, Imam Waked, Seyed M. Alavian, Mei Hsuan Lee, Francesco Negro, Faisal Abaalkhail, Ahmed Abdou, Maheeba Abdulla, Antoine Abou Rached, Inka Aho, Ulus Akarca, Imad Al Ghazzawi, Saad Al Kaabi, Faryal Al Lawati, Khalid Al NamaaniYoussif Al Serkal, Said A. Al-Busafi, Layla Al-Dabal, Soo Aleman, Abdullah S. Alghamdi, Abdulrahman A. Aljumah, Hamad E. Al-Romaihi, Monique I. Andersson, Vic Arendt, Perttu Arkkila, Abdullah M. Assiri, Oidov Baatarkhuu, Abate Bane, Ziv Ben-Ari, Colm Bergin, Fernando Bessone, Florian Bihl, Abdul R. Bizri, Martin Blachier, Antonio J. Blasco, Carlos E. Brandao Mello, Philip Bruggmann, Cheryl R. Brunton, Filipe Calinas, Henry L.Y. Chan, Asad Chaudhry, Hugo Cheinquer, Chien Jen Chen, Rong Nan Chien, Carole Seguin-Devaux, The Polaris Observatory HCV Collaborators

Research output: Contribution to journalArticleResearchpeer-review

1536 Citations (Scopus)


Background The 69th World Health Assembly approved the Global Health Sector Strategy to eliminate hepatitis C virus (HCV) infection by 2030, which can become a reality with the recent launch of direct acting antiviral therapies. Reliable disease burden estimates are required for national strategies. This analysis estimates the global prevalence of viraemic HCV at the end of 2015, an update of—and expansion on—the 2014 analysis, which reported 80 million (95% CI 64–103) viraemic infections in 2013. Methods We developed country-level disease burden models following a systematic review of HCV prevalence (number of studies, n=6754) and genotype (n=11 342) studies published after 2013. A Delphi process was used to gain country expert consensus and validate inputs. Published estimates alone were used for countries where expert panel meetings could not be scheduled. Global prevalence was estimated using regional averages for countries without data. Findings Models were built for 100 countries, 59 of which were approved by country experts, with the remaining 41 estimated using published data alone. The remaining countries had insufficient data to create a model. The global prevalence of viraemic 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) viraemic infections. Genotypes 1 and 3 were the most common cause of infections (44% and 25%, respectively). Interpretation The global estimate of viraemic infections is lower than previous estimates, largely due to more recent (lower) prevalence estimates in Africa. Additionally, increased mortality due to liver-related causes and an ageing population may have contributed to a reduction in infections. Funding John C Martin Foundation.

Original languageEnglish
Pages (from-to)161-176
Number of pages16
JournalThe Lancet Gastroenterology and Hepatology
Issue number3
Publication statusPublished - 1 Mar 2017


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