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The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.

Community Use Of Face Masks And COVID-19: Evidence From A Natural Experiment Of State Mandates In The US: Study examines impact on COVID-19 growth rates associated with state government mandates requiring face mask use in public.

Lyu, Wei, Wehby, George L.·2020·Health Affairs

Abstract

State policies mandating public or community use of face masks or covers in mitigating the spread of coronavirus disease 2019 (COVID-19) are hotly contested. This study provides evidence from a natural experiment on the effects of state government mandates for face mask use in public issued by fifteen states plus Washington, D.C., between April 8 and May 15, 2020. The research design is an event study examining changes in the daily county-level COVID-19 growth rates between March 31 and May 22, 2020. Mandating face mask use in public is associated with a decline in the daily COVID-19 growth rate by 0.9, 1.1, 1.4, 1.7, and 2.0 percentage points in 1-5, 6-10, 11-15, 16-20, and 21 or more days after state face mask orders were signed, respectively. Estimates suggest that as a result of the implementation of these mandates, more than 200,000 COVID-19 cases were averted by May 22, 2020. The findings suggest that requiring face mask use in public could help in mitigating the spread of COVID-19.

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Metadata

Authors
Lyu, W., & Wehby, G. L.
Venue
Health Affairs
Published
2020-08-01
Volume
39
Issue
8
Pages
1419-1425
ISSN
  • 0278-2715 (ISSN-L)
  • 1544-5208
OpenAlex
W3035550116
Cited by
721
References
10
FWCI
25.67
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Community Use Of Face Masks And COVID-19: Evidence From A Natural Experiment Of State Mandates In The US: Study examines impact on COVID-19 growth rates associated with state government mandates requiring face mask use in public. https://app.cochat.ai/papers/10.1377/hlthaff.2020.00818
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Lyu, W., & Wehby, G. L. (2020). Community Use Of Face Masks And COVID-19: Evidence From A Natural Experiment Of State Mandates In The US: Study examines impact on COVID-19 growth rates associated with state government mandates requiring face mask use in public. Health Affairs. https://doi.org/10.1377/hlthaff.2020.00818

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