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quarantine

Isolation of a person or animal with known or possible contagious disease. The term is used frequently in reqards to persons with infected with COVID-19. COVID-19: - exposure of non-essential worker who tests negative: 14 days - essential workers who test negative: - can continue to work if asymptomatic - essential workers who test positive: - 10 days if asymptomatic - 10 days since symptoms first appeared, 24 hours since last fever, & symptoms have improved. [2] - 1800 quarantined athletes with exposures from - social gatherings (41%), roommates (32%), respective sports (13%) - 25% tested positive during quarantine - mean time until positive test 3.8 days from start of quarantine - probability of a positive test < 5% after day 10. [3] - 1/3 of contacts testing positive on PCR 7 days after exposure are asymptomatic - no person negative on day 7 tested positive 8-14 days after exposure [4]

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patient isolation

References

  1. Brooks SK, Webster RK, Smith LE et al. The psychological impact of quarantine and how to reduce it: Rapid review of the evidence. Lancet 2020 Mar 14;395(10227):912-920 PMID: 32112714 https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)30460-8/fulltext
  2. Patel AS How Long Should Docs and Nurses With COVID Stay Home? Medscape - Nov 13, 2020. https://www.medscape.com/viewarticle/939579
  3. Atherstone C, Peterson ML, Malone M, et al. Time from Start of Quarantine to SARS-CoV-2 Positive Test Among Quarantined College and University Athletes - 17 States, Jun-Oct 2020. MMWR Morb Mortal Wkly Rep 2021;70:7-11 https://www.cdc.gov/mmwr/volumes/70/wr/mm7001a2.htm
  4. Jones A, Fialkowski V, Prinzing L, Trites J, Kelso P, Levine M. Assessment of Day-7 Postexposure Testing of Asymptomatic Contacts of COVID-19 Patients to Evaluate Early Release from Quarantine - Vermont, May- November 2020. MMWR Morb Mortal Wkly Rep 2021;70:12-13 https://www.cdc.gov/mmwr/volumes/70/wr/mm7001a3.htm