The introduction of a mandatory mask policy was associated with significantly reduced COVID-19 cases in a major metropolitan city

Review Multidisciplinary Sciences

An evidence review of face masks against COVID-19

Jeremy Howard et al.

Summary: The science on public mask wearing to prevent COVID-19 transmission is rapidly evolving. Evidence suggests that wearing masks reduces the transmission of infected respiratory particles, especially when compliance is high. It is recommended to promote widespread use of face masks in public settings, along with existing hygiene practices, social distancing, and contact tracing strategies.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)

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Article Multidisciplinary Sciences

Inferring the effectiveness of government interventions against COVID-19

Jan M. Brauner et al.

Summary: Research has found that closing educational institutions, limiting gathering sizes, and closing face-to-face businesses are effective nonpharmaceutical interventions in controlling the COVID-19 pandemic, while the additional effect of stay-at-home orders is relatively small.

SCIENCE (2021)

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Article Public, Environmental & Occupational Health

The Impact of Universal Mask Use on SARS-COV-2 in Victoria, Australia on the Epidemic Trajectory of COVID-19

Valentina Costantino et al.

Summary: The study suggests that implementing a six-week lockdown without mask use in Victoria would result in a large resurgence by September. However, if at least 50% of people wear masks with at least 40% effectiveness, the epidemic size can be substantially reduced. Early mask use is more effective in averting cases compared to later implementation.

FRONTIERS IN PUBLIC HEALTH (2021)

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Article Infectious Diseases