San Francisco Department of Public Health, San Francisco, California, USA.
University of California, San Francisco, California, USA.
Clin Infect Dis. 2021 Jun 1;72(11):2018-2020. doi: 10.1093/cid/ciaa1020.
Coronavirus disease 2019 can cause significant mortality in the elderly in long-term care facilities (LTCF). We describe 4 LTCF outbreaks where mass testing identified a high proportion of asymptomatic infections (4%-41% in healthcare workers and 20%-75% in residents), indicating that symptom-based screening alone is insufficient for monitoring for COVID-19 transmission.
2019 年冠状病毒病可导致长期护理机构（LTCF）中的老年人出现大量死亡。我们描述了四起 LTCF 暴发事件，大规模检测发现了相当比例的无症状感染（医护人员中为 4%-41%，居民中为 20%-75%），这表明仅基于症状的筛查不足以监测 COVID-19 传播。
