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PSNet: Patient Safety Network
Journal Article

Outbreak investigation of COVID-19 among residents and staff of an independent and assisted living community for older adults in Seattle, Washington.

Roxby AC, Greninger AL, Hatfield KM, et al. JAMA Intern Med. 2020;180(8):1101-1105.
This study describes the results of surveillance for COVID-19 among residents and staff of an independent/assisted living community in Seattle, Washington. Residents and staff were tested for COVID-19 and completed a symptom questionnaire assessing systems for the preceding 14 days; residents (but not staff) were retested 7 days later. COVID-19 was detected in 3.8% of residents and 3.2% of staff; none of the residents reported significant symptoms but the staff were symptomatic. After 7 days, resident testing was repeated and one new asymptomatic infection was detected. This study highlights the challenges of detecting COVID-19 in asymptomatic persons and the importance of early surveillance and prevention strategies in reducing virus transmission in assisted living communities.