CDC Updates Isolation and Quarantine Recommendations

Yesterday afternoon, CDC shortened the recommended time for isolation from 10 days for those with COVID-19 to 5 days, if asymptomatic, followed by 5 days of wearing a mask when around others. The change is motivated by science demonstrating that the majority of SARS-CoV-2 transmission occurs early in the course of illness, generally in the 1-2 days prior to onset of symptoms and the 2-3 days after.

Additionally, CDC updated the recommended quarantine period. For people who are unvaccinated or are more than six months out from their second mRNA dose (or more than 2 months after the J&J vaccine) and not yet boosted, CDC now recommends quarantine for 5 days followed by strict mask use for an additional 5 days.

Alternatively, if a 5-day quarantine is not feasible, it is imperative that an exposed person wears a well-fitting mask at all times when around others for 10 days after exposure. Individuals who have received their booster shot do not need to quarantine following an exposure, but should wear a mask for 10 days after the exposure. 

For all those exposed, best practice would also include a test for SARS-CoV2 at day 5 after exposure. If symptoms occur, individuals should immediately quarantine until a test confirms symptoms are not attributable to COVID-19.

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