coronavirus December 21, 2021 7:16 pm Omicron Variant: Will We See a Surge? Epidemiologist Dr. Maya Petersen with UC Berkeley’s Department of Public Health joins Raj Mathai to discuss the Omicron variant and the coronavirus pandemic. US & World Videos 2:19 San Francisco barbershop struggles to stay open after pandemic 0:51 Alameda County using dogs to detect COVID 3:57 Interview: Doctor's perspective on COVID 4 years after shutdown started 2:27 Marking 4 years since COVID-19 shut down the Bay Area 2:09 CDC updates COVID isolation guidelines