According to him, the strain was detected in a fully vaccinated person.

“The traveler returned from South Africa on November 22 and tested positive on November 29.

He was in self-isolation, all close contacts had a negative test.

He is fully vaccinated, experiencing mild symptoms, "RIA Novosti quotes Fauci.

Fauci also confirmed that the first case of omicron in the United States was found in the US state of California.

Earlier, the media reported that the first case of the spread of the omicron coronavirus strain was recorded in the United States.