Yes, here in the US, the CDC is working with each state, including the California Department of Public Health, who is in turn working with every local health jurisdiction in the state. While these collective efforts have been very successful to date, we are also planning for eventual local transmission and sustained community transmission.
On March 19, 2020, the State Public Health Officer issued an Order for all Californians to remain sheltered at home. This enforceable Order is intended to preserve the public health and safety of all Californians, and to ensure the health care delivery system is capable of serving all. More information can be found on the state’s coronavirus website.