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Prevalence of Hepatitis B Virus Infection in Kenya, 2007.

Prevalence of Hepatitis B Virus Infection in Kenya, 2007.
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Ly KN, Kim AA, Umuro M, Drobenuic J, Williamson JM, Montgomery JM, Fields BS, Teshale EH,


Ly KN, Kim AA, Umuro M, Drobenuic J, Williamson JM, Montgomery JM, Fields BS, Teshale EH, (click to view)

Ly KN, Kim AA, Umuro M, Drobenuic J, Williamson JM, Montgomery JM, Fields BS, Teshale EH,

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The American journal of tropical medicine and hygiene 2016 06 0695(2) 348-53 doi 10.4269/ajtmh.16-0059

Abstract

Current estimates put the prevalence of hepatitis B virus (HBV) infection in Kenya at 5-8%. We determined the HBV infection prevalence in the human immunodeficiency virus (HIV)-negative Kenyan adult and adolescent population based on samples collected from a national survey. We analyzed data from HIV-negative participants in the 2007 Kenya AIDS Indicator Survey to estimate the HBV infection prevalence. We defined past or present HBV infection as presence of total hepatitis B core antibody (HBcAb), and chronic HBV infection (CHBI) as presence of both total HBcAb and hepatitis B surface antigen (HBsAg). We calculated crude and adjusted odds of HBV infection by demographic characteristics and risk factors using logistic regression analyses. Of 1,091 participants aged 15-64 years, approximately 31.5% (95% confidence interval [CI] = 28.0-35.3%) had exposure to HBV, corresponding to approximately 6.1 million (CI = 5.4-6.8 million) with past or present HBV infection. The estimated prevalence of CHBI was 2.1% (95% CI = 1.4-3.1%), corresponding to approximately 398,000 (CI = 261,000-602,000) with CHBI. CHBI is a major public health problem in Kenya, affecting approximately 400,000 persons. Knowing the HBV infection prevalence at baseline is important for planning and public health policy decision making and for monitoring the impact of viral hepatitis prevention programs.

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