coronavirus September 25, 2021 8:44 am Who Is Eligible for a Booster COVID-19 Vaccine Shot? The CDC on Thursday endorsed booster shots for millions of older or otherwise vulnerable Americans, but who exactly is eligible? 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