coronavirus December 27, 2021 6:17 pm Omicron: What to Know About the Latest COVID Surge UCSF infectious disease specialist Ddr. Peter Chin-Hong examines the latest surrounding the Omicron surge. 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