Masks are still required on the Lab shuttles and on some public transportation systems. Alameda and Contra Costa counties are at low risk per the CDC guidelines, but other Bay Area counties have entered the medium risk category and the Bay Area is experiencing an uptick in COVID cases. https://ehs.lbl.gov/2022/05/03/masking-continues-on-lab-shuttles/
January 2019 – July 2022
