The agency said that research has shown transmission occurs early in the course of infection.

Health professionals have expressedmixedopinions on the guidance.

Some were concerned that reducing the isolation period could be accelerating the rapid spread of the Omicron variant.

illustration of sick person in bed in a dimly-lit room

Verywell Health / Laura Porter

Verywell Health / Julia Ingram

When Will Symptoms Appear?

But symptom onset doesnt always coincide with infectiousness.

When Is Someone Most Contagious During a COVID-19 Infection?

COVID-19 infectiousness chart

Verywell Health / Julia Ingram

The current isolation guidance in South Korea is 10 days.

We cant exactly know how long [infection] lasts, Song told Verywell.

When Should You Test?

In that case, the timing of exposure can help determine which phase a COVID-positive person is in.

For the most recent updates on COVID-19, visit ourcoronavirus news page.

Centers for Disease Control and Prevention.What we know about quarantine and isolation.

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