Public Health Response to the Initiation and Spread of Pandemic COVID-19 in the United States, February 24–April 21, 2020 Published on 2020-05-082022-10-30 Journal: Morbidity and Mortality Weekly Report [키워드] COVID-19 Initiation Public response The United States [Category] COVID-19, MERS, PMC URL [DOI] 10.15585/mmwr.mm6918e2 [Article Type] Full Report [Source] PMC All Keywords 【제목키워드】 COVID-19, response, The United States, Public, Initiation,