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. 2022 Feb 26;32(5):e2336. doi: 10.1002/rmv.2336

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© 2022 John Wiley & Sons Ltd.

This article is being made freely available through PubMed Central as part of the COVID-19 public health emergency response. It can be used for unrestricted research re-use and analysis in any form or by any means with acknowledgement of the original source, for the duration of the public health emergency.

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Network meta‐analysis of different types of facemask compared with control (no mask or very low frequencies) for respiratory viral infections in health care and non‐health care settings. (a) Risk of influenza virus infection in health care setting, (b) risk of influenza virus infection in community setting, (c) risk of coronavirus infection (SARS, MERS, and COVID‐19) in healthcare setting, and (d) risk of coronavirus infection (SARS, MERS, and COVID‐19) in community setting. For studies that investigated mask effectiveness separately for usual care and aerosol‐generating procedure within the healthcare setting, results from usual care were preferentially used for the analysis. Effect estimates are presented in odds ratios with 95% confidence interval. Facemasks are ranked by surface under the cumulative ranking curve value