Alliance for Pandemic Preparedness

January 20, 2021

Mask-Wearing and Control of SARS-CoV-2 Transmission in the USA: A Cross-Sectional Study

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A cross-sectional survey study (n =378,207 participants) of mask-wearing and physical distancing in the US found that a 10% increase in self-reported mask-wearing was associated with an increased odds of transmission control at the community level (OR=3.53). Communities with high reported mask-wearing and physical distancing had the highest predicted probability of transmission control. Segmented regression analysis of reported mask-wearing showed no statistically significant change after mandates were introduced, but the upward trend in reported mask-wearing persisted.

Rader et al. (Jan 20, 2021). Mask-Wearing and Control of SARS-CoV-2 Transmission in the USA: A Cross-Sectional Study. The Lancet Digital Health. https://doi.org/10.1016/S2589-7500(20)30293-4