A screenshot from a research article reading: The National Academy of Sciences of the United States of America JOURNAL ARTICLE Impact of community mask mandates on SARS-CoV-2 transmission in Ontario after adjustment for differential testing by age and sex Amy Peng, Savana Bosco, Alison E Simmons, Ashleigh R Tuite, David N Fisman PNAS Nexus, Volume 3, Issue 2, February 2024, page 65, https://doi.org/10.1093/pnasnexus/pgae065 Published: 12 February 2024
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