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

Eye on Influenza 2017-18 Vol 7February 20, 2018
Influenza Activity Expected to Continue for Several More Weeks; It’s Not Too Late to Vaccinate!

Eye on Influenza 2017-18 Vol 6February 2, 2018
Influenza Viruses Continue to Circulate in Orange County
Although influenza viruses continue to circulate, overall activity has steadily decreased since week 1 (ending 1/6/2018).

CD News Flash Newsletter Vol 4January 25, 2018
It's Not Too Late to Get Vaccinated
Although the first wave of influenza this season seems to have peaked in Orange County in late December/early January, activity is still high and we expect influenza to be circulating over the next several weeks to months.

Eye on Influenza 2017-18 Vol 5January 19, 2018
Severe Cases of Influenza Continue to be Reported in Orange County
Although influenza activity has decreased in the past few weeks, overall activity in Orange County continues to be elevated and influenza strains are expected to circulate for several more weeks to months.

Eye on Influenza 2017-18 Vol 4January 12, 2018
Influenza Activity Continues at High Levels in Orange County
Orange County continues to receive large numbers of influenza reports, outbreaks in long term care facilities and other group settings, and severe cases (less than 65 years of age hospitalized in intensive care or who died).