“This is the first monthly update alert for a living rapid review on the use of masks for prevention of respiratory virus infections, including SARS-CoV-2, in health care and community settings (1). Searches were updated from 2 June 2020 to 2 July 2020, using the same search strategies as the original review. The update searches identified 321 citations. Due to the high volume of literature and to focus on higher-quality evidence, we modified selection criteria for this and future updates by restricting inclusion to peer-reviewed studies. Other inclusion criteria were unchanged. One study on the prevention of SARS-CoV-2 infection in a community setting was added for this update (2).
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