Omicron Found Mostly in Vaccinated Americans So Far
On Dec. 1, 2021, the first case of the new SARS-CoV-2 variant known as Omicron (initially designated “B.1.1.529”) in the United States was confirmed by the U.S. Centers for Disease Control and Prevention (CDC) in California. The case involves a fully vaccinated individual in San Francisco who had returned from a trip to South Africa […]