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• W3048351289 abstract "<ns4:p><ns4:bold>Background:</ns4:bold> Randomized controlled trials of licensed oral rotavirus group A (RVA) vaccines, indicated lower efficacy in developing countries compared to developed countries. We investigated the pooled effectiveness of Rotarix<ns4:sup>® </ns4:sup>in Africa in 2019, a decade since progressive introduction began in 2009.</ns4:p><ns4:p> <ns4:bold>Methods:</ns4:bold> A systematic search was conducted in PubMed to identify studies that investigated the effectiveness of routine RVA vaccination in an African country between 2009 and 2019. A meta-analysis was undertaken to estimate pooled effectiveness of the full-dose versus partial-dose of Rotarix<ns4:sup>®</ns4:sup> (RV1) vaccine and in different age groups. Pooled odds ratios were estimated using random effects model and the risk of bias assessed using Newcastle-Ottawa scale. The quality of the evidence was assessed using GRADE.</ns4:p><ns4:p> <ns4:bold>Results:</ns4:bold> By December 2019, 39 (72%) countries in Africa had introduced RVA vaccination, of which 34 were using RV1. Thirteen eligible studies from eight countries were included in meta-analysis for vaccine effectiveness (VE) of RVA by vaccine dosage (full or partial) and age categories. Pooled RV1 VE against RVA associated hospitalizations was 44% (95% confidence interval (CI) 28-57%) for partial dose versus 58% (95% CI 50-65%) for full dose. VE was 61% (95% CI 50-69%), 55% (95% CI 32-71%), 56% (95% CI 43-67%), and 61% (95% CI 42-73%) for children aged <12 months, 12-23 months, <24 months and 12-59 months, respectively.</ns4:p><ns4:p> <ns4:bold>Conclusion:</ns4:bold> RV1 vaccine use has resulted in a significant reduction in severe diarrhoea in African children and its VE is close to the efficacy findings observed in clinical trials. RV1 VE point estimate was higher for children who received full dose than those who received partial dose, and its protection lasted beyond the first year of life.</ns4:p>" @default.
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• W3048351289 date "2020-09-24" @default.
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• W3048351289 title "Effectiveness of Rotarix® vaccine in Africa in the first decade of progressive introduction, 2009-2019: systematic review and meta-analysis" @default.
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• W3048351289 doi "https://doi.org/10.12688/wellcomeopenres.16174.2" @default.
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