Background: This systematic review was aimed to estimate hepatitis C virus (HCV) seroprevalence and burden in disease in WHO South East Asia Region (SEAR).
Methods: Electronic databases (PubMed, Scopus, Embase, and Google Scholar) and websites of non-indexed national medical journals, government and international health agencies were searched to identify English language literature published between 1991 and June 2020. We selected the studies reporting HCV seroprevalence in asymptomatic general (low-risk) and high-risk adult populations, that is, persons living with HIV (PLHIV), persons who inject drugs (PWID), sex workers, persons on maintenance hemodialysis (MHD), people in prison, and men sex with men (MSM). Seroprevalence data were combined to estimate weighted pooled prevalence (95% confidence interval) in each group and in each country, using the random-effects model. Estimated pooled seroprevalences were multiplied with estimated populations at risk to estimate the overall HCV burden.
Results: The analysis included 538 studies (35 Bangladesh, 6 Bhutan, 2 DPR Korea, 323 India, 43 Indonesia, 2 Maldives, 18 Myanmar, 29 Nepal, 11 Sri Lanka, 67 Thailand, and 2 Timor-Leste). In SEAR, the weighted pooled anti-HCV seroprevalence was estimated as 0.84% (0.56-1.12) in low-risk population and 13.67% (10.95-16.40) in PLHIV, 51.44% (43.67-59.20) in PWID, 25.80% (20.34-32.09) in MHD, 8.39% (5.84-11.51) in prison inmates, 2.69% (1.43-4.13) in people with high-risk sex behavior, and 11.43% (8.61-14.74) in MSM. The total HCV burden in low-risk and high-risk populations in SEAR countries was estimated as 12.45 million and 1.65 million, respectively.
Conclusion: Our estimates of HCV seroprevalence and burden should help the respective countries in planning their HCV elimination strategies.
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