Universal masking is an effective strategy to flatten the severe acute respiratory coronavirus virus 2 (SARS-CoV-2) healthcare worker epidemiologic curve. (25th December 2020) - Seidelman, Jessica L.; Lewis, Sarah S.; Advani, Sonali D.; Akinboyo, Ibukunoluwa C.; Epling, Carol; Case, Matthew; Said, Kristen; Yancey, William; Stiegel, Matthew; Schwartz, Antony; Stout, Jason; Sexton, Daniel J.; et al.