Communicable Disease Control

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.

For questions or comments, please email epi@ochca.com.

Latest News & Health Advisories

CD Health Alert: Increase in Mumps Cases in Orange CountyNovember 8, 2019
Since the beginning of 2019, 20 cases of mumps have been identified in Orange County residents. Three cases had onset in October. Median age of cases was 25 years (range 10 to 68 years), 60% were male. 16 (80%) out of 20 cases self-reported mumps virus immunization. 11 (55%) out of 20 cases had no history of international travel or contact with a known case, indicating local spread of mumps virus.
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Eye on Influenza 2019-20 Volume 16 Issue 1November 1, 2019
Influenza activity remains low in Orange County. Get your vaccination now!
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CD Health Alert: Potential Public Exposures to Measles CaseOctober 23, 2019
The OC Health Care Agency (HCA) has confirmed that a Los Angeles resident vistited Disneyland Park while infectious with measles on Wednesday, October 16th. The Orange County Health Care Agency and the Los Angeles Department of Public Health are conducting a coordinated investigation to identify any potential exposures and cases.
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CD Health Alert: Orange County Reports Season's First Influenza CaseOctober 9, 2019
The Orange County Health Care Agency (HCA) has confirmed the County's first case of influenza for the 2019-20 season. The best way to prevent the flu is by getting vaccinated. Anyone who has not already received the flu vaccine should get it now before influenza activity increases.
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CD Health Alert: Increase in Mumps Cases in Orange CountySeptember 5, 2019
Since the beginning of June, nine cases of mumps have been identified in Orange County residents. Eight of nine cases were in adults with ages ranging 19-41 years, one case was diagnosed in a 10 year old child.
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