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A week after changing its quarantine and isolation guidelines regarding COVID-19, the CDC gave out a detailed rationale as to why the periods were shortened.

The Centers for Disease Control and Prevention on Tuesday explained the scientific rationale for shortening its COVID-19 isolation and quarantine recommendations and clarified that the guidance applies to kids as well as adults. The agency also mentioned that people who catch COVID-19 are not required to test after five days of isolation.

Source: CNBC (Ed Jones | AFP | Getty Images)

After shortening the quarantine period to 5 days and mandating isolation only if symptomatic after contact with a COVID-19 patient, the CDC said the changes were in keeping with evidence that people with the coronavirus are most infectious in the two days before and three days after symptoms develop.

Posting the scientific backing of this decision after several experts questioned it, the CDC released more than 100 studies from 17 countries indicating that most transmission happens early in an infection. The CDC acknowledged the data come from research done when delta and other pre-omicron variants were causing the most infections. But the agency also pointed to limited, early data from the U.S. and South Korea that suggests the time between exposure and the appearance of symptoms may be shorter for omicron than for earlier variants.

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Rhea Sovani

Author Rhea Sovani

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