Legal authority for County Health Officer orders addressing the COVID-19 pandemic is in the California Health and Safety Code, which grants broad powers to the Health Officer to protect public health during local emergencies and prevent the spread of contagious diseases. The statutes include Health and Safety Code sections 101040 and 120175. As actions taken under this statutory authority, Health Officer orders are measures taken to preserve the public health, which is an exercise of the police power contained in the California Constitution.