ASSOCIATED PRESS
San Francisco Health Director Dr. Grant Colfax talks about the first confirmed case of the omicron variant as Mayor London Breed, right of podium, listens during a COVID-19 briefing outside City Hall in San Francisco, Wednesday, Dec. 1. The U.S. recorded its first confirmed case of the omicron variant Wednesday — a person in California who had been to South Africa. Genomic sequencing on the patient's virus was conducted at the University of California, San Francisco.