Epidemiology & Assessment

The Epidemiology and Assessment 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

Provider Advisory: First West Nile Virus Positive Mosquito SampleJuly 10, 2018
The First West Nile Virus Positive Mosquito Sample has been Identified in Orange County

CD Connection Newsletter - JuneJune 29, 2018
Endemic (Flea-Borne) Typhus Update
Flea-borne typhus is endemic in Orange County and cases may occur at any time. Incidence generally increases in the upcoming summer months in our area. Clinicians should consider typhus in patients with compatible symptoms and send testing.

CD Connection Newsletter - MayMay 31, 2018
May is Hepatitis Awareness Month
Hepatitis is inflammation of the liver which can result from infectious and noninfectious causes.

CD Connection Newsletter - AprilApril 30, 2018
Update on Zika and West Nile Virus for Orange County

CD Connection Newsletter - MarchMarch 23, 2018
Tuberculosis (TB) Update in Orange County