January 4, 2022 10:03 am CDC Shortens Waiting Period for Pfizer Booster The Centers for Disease Control and Prevention updated guidelines for Pfizer COVID-19 boosters, shortening the time from second dose to booster to five months. 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
