SARS-CoV-2 Infection in Public School District Employees Following a District-Wide Vaccination Program — Philadelphia County, Pennsylvania, March 21–April 23, 2021 Published on 2021-07-302022-10-30 Journal: Morbidity and Mortality Weekly Report [키워드] District employee Philadelphia Program Public SARS-CoV-2 School [저자] David Rubin, Maggie Eisen, Sophia Collins, Jeffrey W. Pennington, Xi Wang, Susan Coffin [Category] COVID-19, PMC URL [DOI] 10.15585/mmwr.mm7030e1 [Article Type] Full Report [Source] PMC All Keywords 【제목키워드】 SARS-CoV-2, Program, Philadelphia, School, District, employee, Public,