Association between Universal Masking in a Health Care System and SARS-CoV-2 Positivity among Health Care Workers

Wang, X., Ferro, E. G., Zhou, G., Hashimoto, D., & Bhatt, D. L. (2020, August 18). Association between Universal Masking in a Health Care System and SARS-CoV-2 Positivity among Health Care Workers. JAMA - Journal of the American Medical Association. American Medical Association. https://doi.org/10.1001/jama.2020.12897