A healthcare worker administers a test at a Covid-19 testing tent outside a Bay Area Rapid Transit (BART) station in the Mission District of San Francisco, California, U.S., on Monday, Nov. 30, 2020. UCSF and the Latino Task Force held post-holiday Covid-19 testing in four of the most affected neighborhoods in San Francisco, ABC7 San Francisco reports. Photographer: David Odisho/Bloomberg via Getty Images