US CDC backs previous advice for 5-day COVID-19 isolation; no test needed
WASHINGTON: The United States Centers for Disease Control and Prevention (CDC) on Tuesday (Jan 4) backed its week-old guidance for people seeking to end their COVID-19 isolation at five days, adding that they could take a rapid antigen test if they want to and can access one, but it is not requiring that.
The agency had been pressured by health experts to institute a test requirement after it cut in half its guidance last week for people to isolate after a COVID-19 infection to five days from 10. It said that the move was based on the science around the transmission of the virus.
On Tuesday, the CDC added an explanation on its website, saying that a review of 113 studies from 17 countries showed that most transmission occurs early in the course of infection. It said that the average period of infectiousness and risk of transmission was “between 2-3 days before and 8 days after symptom onset”.
Dr Anthony Fauci, the nation’s top infectious disease official and President Joe Biden’s chief medical adviser, in television interviews last Sunday said that officials were considering asking people to get tested after a five-day quarantine period.
The agency’s new advice stops short of mandating or recommending the test.
“If an individual has access to a test and wants to test, the best approach is to use an antigen test towards the end of the 5-day isolation period,” the agency said.
The isolation period should be followed by strict mask use for an additional five days, the CDC said last week and again on Tuesday. However, if an individual tests positive after 5 days, they should isolate for the full 10 days, it said.
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