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  • Title: Cost-effectiveness analysis of hepatitis B vaccine booster in children born to HBsAg-positive mothers in rural China.
    Author: Wang Y, Shi JF, Wang L, Yan Y, Yao H, Dai M, Chen T, Qu C.
    Journal: Int J Infect Dis; 2019 Jan; 78():130-139. PubMed ID: 30466898.
    Abstract:
    OBJECTIVE: In rural areas of China with highly endemic for hepatitis B virus (HBV) infection, protective efficacy was observed in adulthood when a one-dose HBV vaccine booster was administered to high-risk children born to mothers who were positive for hepatitis B surface antigen (HBsAg). The aim of this study was to estimate the cost-effectiveness of an HBV vaccine booster in this specific group of children when given at 10 years of age. METHODS: Two potential strategies were considered: strategy 1 was a one-dose booster given if the child was negative on HBsAg screening; strategy 2 was a one-dose booster given if the child was negative on both HBsAg plus anti-HBs screening. A decision tree combined with a Markov model was developed to simulate the booster intervention process and to simulate the natural history of HBV infection in a cohort of 10-year-old children who were born to HBsAg-positive mothers. The model was calibrated based on multiple selected outcomes. Costs and quality-adjusted life years (QALYs) were measured from a societal perspective. Cost-effectiveness ratios (CERs) of the different strategies were compared in both base-case and one-way sensitivity analyses. RESULTS: Compared to the current practice of 'no screening and no booster', both strategy 1 and strategy 2 were cost-saving, with CERs estimated at US$ -6961 and US$ -6872 per QALY gained, respectively. In the one-way sensitivity analysis for strategy 1, all the CERs were found to be less than US$ -5000 per QALY gained after considering the uncertainty of all the variables, including vaccination protective efficacy, natural history, behavior, and various costs and utility weights. In a 'worst case' scenario (all parameter values simultaneously being at the worst), the CER of strategy 1 increased to US$ 3263 per QALY gained, which was still less than the GDP per capita of China in 2016 (US$ 8126). CONCLUSIONS: A hepatitis B vaccine booster given to children born to HBsAg-positive mothers in rural China would be cost-effective and could be considered in HBV endemic areas.
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