Contra Costa County Releases New Masking Order April 17, 2020 General COVID-19, Public Health Today, April 17, the Contra Costa County Health Officer released a new "Cover Your Face" order, requiring that all individuals working at or visiting an essential business must wear face coverings to help reduce the spread of COVID-19. The order will be effective starting Wednesday, April 22. The order specifies that Members of the public must mask when they: work at an essential business are inside an essential business, such as a grocery store visit a healthcare provider or facility wait in line for or ride public transportation This comes directly after the City of Berkeley masking order, which was issued yesterday. Effective April 17, 2020, The Health Officer of the City of Berkeley has issued an Order to certain licensed facilities requiring masking, temperature monitoring, self-evaluation of symptoms, cancellation of group activities, notification of transport, among other requirements. Full details of the City of Berkeley requirements and of the types of facilities affected can be found in the order.