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Communicable Disease Control Home Page

The Orange County Communicable Disease Control Division (CDCD) collects surveillance and responds to communicable disease issues of public health importance.

Communicable Diseases that CDCD responds to include:

Information on additional communicable diseases that are reported to public health can be found here.

Summary surveillance reports for reportable communicable diseases in Orange County can be found here.

Additional Services

Information, testing, and treatment for:

Reportable Diseases- Information for Orange County Medical Providers

List of Reportable Diseases  in Orange County- Download PDF Download PDF

California Code of Regulations, Title 17, Section 2500, mandates that certain communicable and non-communicable diseases/conditions be reported to the local health department using specified methods and time frames. The List of Reportable Diseases, which summarizes disease reporting requirements for providers, may be downloaded from this website and freely copied. In addition, clinical laboratories serving California residents are mandated to report specific clinical positive results according to the List of Laboratory Reportable Diseases.

The Confidential Morbidity Report (CMR) form may be used to report notifiable diseases/conditions to Orange County Public Health.

The Communicable Disease Control unit’s medical directors, public health nurses, and epidemiologists investigate individual cases and outbreaks of reported communicable disease (see List of Reportable Diseases) per the State of California Code of Regulations. We monitor disease trends, and often provide current statistics and other information to doctors, hospitals, the public and news media. For more information or CD reporting 24/7 call 714-834-8180, you can also email us at