Former FDA chief Scott Gottlieb on Wednesday (Dec. 1) cautioned against overestimating the impact of the newly identified COVID-19 variant Omicron until clearer information emerges, coming as the first U.S. case of Omicron surfaced in California. On Wednesday, the Centers for Disease Control and Prevention announced that the California and San Francisco public health departments had confirmed a case of Omicron (B.1.1.529) in someone who returned from travel in South Africa on Nov. 22. The person, who is self-quarantining, was...