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    Cluster randomised controlled trial to examine medical mask use as source control for people with respiratory illness by Abrar Ahmad Chughtai, Chandini Raina MacIntyre, Yi Zhang, Quanyi Wang, Bayzidur Rahman, Haiyan Zhang, Holly Seale, Daitao Zhang, Yanhui Chu

    Published 2016-12-01
    “…Rationale Medical masks are commonly used by sick individuals with influenza-like illness (ILI) to prevent spread of infections to others, but clinical efficacy data are absent.Objective Determine whether medical mask use by sick individuals with ILI protects well contacts from related respiratory infections.Setting 6 major hospitals in 2 districts of Beijing, China.Design Cluster randomised controlled trial.Participants 245 index cases with ILI.Intervention Index cases with ILI were randomly allocated to medical mask (n=123) and control arms (n=122). …”
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