BACKGROUND Care homes have experienced a high number of COVID-19 related deaths of residents since the onset of the pandemic. However, up to May 2020, there has been a lack of information about the extent of SARS-CoV-2 infection in residents and staff in care homes and limited testing in this setting. RESULTS Overall, the point prevalence of SARS-CoV-2 infection was 6.5% with a higher rate in residents (9.0%) than in staff (4.7%). A key finding was the high proportion of asymptomatic infection detected in staff (69%) and residents (51%) with evidence of under-detection of symptoms by care home staff. CONCLUSIONS The high proportion of asymptomatic infection combined with under detection of symptoms by care home staff indicates that offering a test to all residents and staff in care homes with rapid reporting of results would assist accurate identification of infected individuals, facilitating prompt infection prevention and control action. METHODS Combined nose and throat swab testing for SARS-CoV-2 RNA was carried out in 2455 residents and staff across 37 care homes in the London Borough of Bromley across a three-week period. Results were reported within 24 hours of sample delivery and data were collected on the presence or absence of symptoms.

中文翻译：

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对伦敦南部一大批养老院中居民和员工进行的通用SARS-CoV-2 RNA检测的研究。

自大流行开始以来，护理院就已经经历了大量与COVID-19相关的居民死亡事件。但是，直到2020年5月，仍缺乏关于护理院居民和工作人员中SARS-CoV-2感染程度的信息，并且在这种情况下测试有限。结果总体而言，SARS-CoV-2感染的点流行率为6.5％，其中居民（9.0％）的比率高于工作人员（4.7％）的比率。一个关键的发现是，在工作人员（69％）和居民（51％）中检测到无症状感染的比例很高，并且有迹象表明养老院工作人员没有发现症状。结论高比例的无症状感染以及护理院工作人员对症状的检测不足表明，对护理院中的所有居民和工作人员进行测试并快速报告结果将有助于准确识别受感染的人，促进及时的感染预防和控制行动。方法在3个星期的时间内，在伦敦布罗姆利自治市的37个疗养院的2455名居民和工作人员中，对SARS-CoV-2 RNA进行了鼻和咽拭子联合测试。样品递送后24小时内报告了结果，并收集了有无症状的数据。方法在3个星期的时间内，在伦敦布罗姆利自治市的37个疗养院的2455名居民和工作人员中，对SARS-CoV-2 RNA进行了鼻和咽拭子联合测试。样品递送后24小时内报告了结果，并收集了有无症状的数据。方法在3个星期的时间内，在伦敦布罗姆利自治市的37个疗养院的2455名居民和工作人员中，对SARS-CoV-2 RNA进行了鼻和咽拭子联合测试。样品递送后24小时内报告了结果，并收集了有无症状的数据。