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Communicable Disease


Novel Coronavirus Information

Communicable Disease Programs fight the spread of contagious diseases in Contra Costa County. We work to contain diseases by:

  • Investigating who is sick and who else might get sick
  • Offering vaccines
  • Providing case management services to those who are sick
  • Ordering lab tests to confirm the presence of a disease or virus
  • Educating health providers and the public
  • Collecting data on diseases

We also play a critical role in planning how to protect people in case of a public health emergency such as a flu pandemic.



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Contact Us

Contra Costa Public Health Division
597 Center Avenue, Suite 200A
Martinez, California 94553
925-313-6740
925-313-6465 fax



Physicians who need to report a suspected public health emergency should contact the Public Health division immediately at 925-313-6740; or after hours, call the sheriff's dispatch at 925-646-2441 and ask for the Health Officer On Call.