Epidemiology & Assessment

County of Orange Reports First Influenza-Related DeathJanuary 27, 2016
The County of Orange Health Care Agency has confirmed Orange County’s first influenza-related death in a person under 65 this season. The Public Health laboratory confirmed that the 50 year-old male, who was a resident of Westminster, was infected with influenza B virus.

Zika Virus in Latin AmericaJanuary 22, 2016
In response to the ongoing Zika virus outbreak in Latin America, and reports of microcephaly in newborns born to Zika-infected mothers, the Centers for Disease Control and Prevention (CDC) and California Department of Public Health (CDPH) recommend that pregnant women consider postponing travel to areas where Zika virus transmission is ongoing. Pregnant women who must travel to one of these areas should talk to their healthcare provider first and take measures to avoid mosquito bites during the trip. For more information, see the CDPH advisory.
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Rates of Influenza A and B Continue to Increase in Orange CountyJanuary 15, 2016
Influenza is rapidly increasing in Orange County and the U.S. Several severe influenza cases have been reported in Orange County. If not already, now is the time to get vaccinated!. For more information, see the Eye on Influenza newsletter.


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. For more information or to report a Public Health emergency 24/7 call 714-834-8180.

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