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Key Points Question What is the risk of SARS-CoV-2 transmission from individuals leaving test-based quarantines of various durations? Findings In this cohort study of 301 quarantined university students and staff… Click to show full abstract
Key Points Question What is the risk of SARS-CoV-2 transmission from individuals leaving test-based quarantines of various durations? Findings In this cohort study of 301 quarantined university students and staff who tested positive for COVID-19, 40 (13.3%) tested negative and were asymptomatic on day 7, implying an approximate 13% postquarantine transmission risk for 7-day test-based quarantine. Meaning To maintain the 5% transmission risk used as the basis for the 7-day guideline, our data suggest that quantitative polymerase chain reaction test–based, nonstrict quarantine should be 10 days.
Journal Title: JAMA Network Open
Year Published: 2022
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