US reports 1st case of omicron variant in returning traveler

The U.S. recorded its first confirmed case of the omicron variant Wednesday — a person in California who had been to South Africa — as scientists around the world raced to establish whether the new, mutant version of the coronavirus is more dangerous than previous ones.

Dr. Anthony Fauci, the United States’ top infectious disease expert, made the announcement at the White House.

“We knew it was just a matter of time before the first case of omicron would be detected in the United States,” he said.

The infected person was identified as a traveler who had returned from South Africa on Nov. 22. The person, who was fully vaccinated but had not had a booster shot, tested positive on Monday and had mild symptoms that are improving, officials said. The person agreed to remain in quarantine, and all the individual’s close contacts have been reached and have tested negative.