Sustained Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Associated Hospitalizations Among Adults — United States, March–July 2021성인의 COVID-19 관련 입원에 대한 Pfizer-BioNTech 및 Moderna 백신의 지속적인 효과 — 미국, 2021년 3월–7월 Published on 2021-08-272022-09-10 Journal: Morbidity and Mortality Weekly Report [키워드] Against COVID-19 Moderna Pfizer-BioNTech United States [Category] MERS, 변종, PMC URL [DOI] 10.15585/mmwr.mm7034e2 [Article Type] Full Report [Source] PMC All Keywords 【제목키워드】 COVID-19, United States, Pfizer-BioNTech, Moderna, Against,