coronavirus October 20, 2021 7:28 pm Should Businesses Be Required to Check for Proof of COVID Vaccination? The Bay Area answers the Question of the Day: Should businesses be required to check for proof of COVID vaccination? US & World Videos 1:08 Antioch school supervisor placed on leave after NBC Bay Area worker bullying report 3:23 UC Davis finds brain sizes are growing 3:36 Waymo expands driverless taxi service 2:32 Officials release footage of suspected vehicle involved in mail carrier robbery 2:01 New proposal aims to make Front Street San Francisco's entertainment zone