Updated evidence suggests that masks may be associated with a reduction in risk for SARS-CoV-2 infection AnnalsofIM evidence masks mask covid COVID19 SARSCoV2 covidmask infection risk transmission pandemic publichealth
By Neha MathurMay 17 2023Reviewed by Lily Ramsey, LLM In a recent rapid review published in the Annals of Internal Medicine Journal, researchers presented live, updated evidence of the effectiveness of masks in preventing severe acute respiratory syndrome coronavirus 2 infection in community and healthcare settings.
They retrieved these RCTs and studies from PubMed, MEDLINE, Elsevier EMBASE, and medRxiv through an extensive search, which the team conducted between 3 June 2022 and 2 January 2023. i) What are the efficacy and comparative efficacies of respirators , cloth, and face masks in preventing SARS-CoV-2 infection in high vs. non-high-risk settings?The study outcomes encompassed SARS-CoV-2 infection and related hazards, as assessed by laboratory testing. Finally, the team updated an evidence map depicting the strength of evidence and effect direction for each mask comparison across both settings.
Observational studies consistently found that masking was associated with reduced risk for SARS-CoV-2 infection vs. no-masking in community settings. Owing to their methodological limitations and inconsistencies, all included observational studies fetched inadequate evidence of the usefulness of N95 vs. surgical masks in healthcare settings and the risk of COVID-19.
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