Communicable Disease Reporting

Press Enter to show all options, press Tab go to next option

Report a Disease

During Business Hours (Monday-Friday 8:00 am - 5:00 pm)

To report an URGENT communicable disease concern during business hours, call


For non-urgent communicable diseases, please download and complete a Confidential Morbidity Report (CMR) below. The second page of the CMR lists all reportable disease and guidelines for reporting.

HIV/AIDS reporting guidelines are posted here or you may call the Yolo County HIV/AIDS Program Coordinator at (530) 666-8670 to report.  Please do NOT fax HIV/AIDS reports.


During Non-Business Hours (evenings, weekends, and holidays)

The Yolo County Community Health Branch is accessible after hours and on holidays at


for URGENT communicable disease concerns. Please be prepared to provide the dispatcher with your name, affiliation, the nature of the report or emergency and a phone number where you can be contacted by the Yolo County Community Health Branch on-call staff.


Yolo County  Health and Human Services Agency
 Communicable Diseases
  25 N. Cottonwood Street, Woodland, CA 95695

Business Hours: Monday through Friday 8:00 am to 5:00 pm
Main Line (530) 666-8643, Confidential Fax (530) 669-1549
After Business Hours (24/7) Contact the MHOAC at (530) 321-3620

Yolo County Press Releases             Health Alerts (CAHAN)

List of Reportable Diseases


Expand/Contract Questions and Answers

  • Don't labs report all these disease anyway?

  • How does the Health Insurance Portability and Accountability Act (HIPAA) affect disease reporting?

  • How quickly must disease be reported?

  • Is someone available to answer communicable disease questions?

  • Should I wait for lab confirmation before reporting a disease?

  • What diseases have been reported in Yolo County in the past?

  • What diseases must be reported?

  • What is the legal basis for disease reporting in California?

  • Where can I find more information about specific diseases?

  • Where is testing for blood-lead levels available? How much does testing cost?

  • Who must report diseases?

  • Who should get a blood-lead test?

  • Why must health care providers report?