Epidemiology & Assessment

Meningococcal Disease Recommendations/California Department of Public Health - Medical AdvisoryApril 17, 2014
In response to a cluster of invasive meningococcal disease in the men who have sex with men (MSM) population in 2014 in Los Angeles County, both the County of Orange Health Care Agency and California Department of Public Health have issued recommendations emphasizing to medical providers the increased risk of invasive meningococcal disease in the MSM population.

Mercury Poisoning Linked to Use of Face Cream - Medical AdvisoryApril 7, 2014
Mercury poisoning has recently been related to face cream products that are homemade or imported from Mexico and used to lighten skin, fade freckles and age spots, and treat wrinkles and acne. As of April 7, one case of mercury poisoning has been confirmed in Orange County.

Measles Outbreak in Orange County MMR Vaccine Highly RecommendedMarch 27, 2014
Orange County has twenty-one confirmed cases of measles in 2014, the most reported by any county in California. The Health Care Agency expects that the measles outbreak will continue to spread, and reminds the public that the best way to prevent the measles is by getting vaccinated.


Certain communicable diseases are required to be reported to the local health department (see List of Reportable Diseases) as per the State of California Code of Regulations. Epidemiology and Assessment (E&A) unit's medical directors, public health nurses, and epidemiologists investigate individual cases and outbreaks of reported communicable diseases. We monitor disease trends, and often provide current statistics and other information to doctors, hospitals, the public and news media. We may also provide education or preventive treatment in some circumstances. Although other units handle reports of HIV/AIDS, tuberculosis (TB) or sexually transmitted diseases (STDs), we do monitor their trends in Orange County.

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