https://www.siliconvalley.com/2020/03/24/six-bay-area-counties-order-coronavirus-testing-data-from-labs/

Seven Bay Area jurisdictions have ordered academic, commercial and pop-up labs to report all COVID-19 testing data, including negatives, to health authorities as they attempt to track the fast-spreading virus across the region.

On Tuesday, Alameda, Contra Costa, Marin, San Francisco,  San Mateo and Santa Clara counties, alongside the City of Berkeley, announced a new order that mandates all labs to report test results for all residents to both the health care provider and county officials.