The person infected with the Omicron strain returned to San Francisco, California on November 22 from a trip to South Africa. A week later, he passed the test and got a positive result.
The person is now in quarantine. He was fully vaccinated against the Moderna coronavirus, and his illness is mild, the channel noted.
Fauci called for fully immunized from COVID-19 US citizens get booster doses of the vaccine.
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