On March 15, Governor Newsom called for voluntary closure of bars and in-home self-isolation of seniors 65 and older, as well as persons at-risk due to underlying conditions.[298] On March 16, the health officers of Alameda, Contra Costa, Marin, San Francisco, San Mateo, and Santa Clara counties announced, with the City of Berkeley, a legal order directing their respective residents to shelter in place for three weeks beginning midnight March 17 to April 7 in order to slow the spread of the coronavirus.[299] The order limited activity, travel and business functions to only the most essential needs.[300][301][302] The same day, the county of Santa Cruz issued a similar shelter in place order.[303]