Information about emerging diseases, diseases with updated reporting or testing recommendations, agents of bioterrorism, and resources available to you.
CD Connection Newsletter
Click icon to view
May 20, 2016 Orange County reports its first West Nile Virus-positive birds and mosquito pools of the season; Zika virus update.
March 10, 2016 First Zika Virus Infection Confirmed in Orange County Resident
February 22, 2016 Zika Virus Infection: Current Recommendations for Orange County Medical Providers.
November 17, 2015 Mosquitoes capable of transmitting chikungunya and dengue viruses have been detected in multiple areas around Orange County, and West Nile virus activity is slowing in Orange County, but cases continue to be reported.
October 19, 2015 Mosquitoes capable of transmitting chikungunya and dengue fever have been found in Mission Viejo.
September 25. 2015 Human Cases of West Nile Virus (WNV) continue to be reported in Orange County
September 4, 2015 West Nile Virus (WNV) activity is increasing in Orange County
July 31, 2015 West Nile Virus (WNV) Season is Here!
May 22, 2015 West Nile Virus (WNV) Update
April 23, 2015 Summary Report for the 2014 West Nile Virus Season (corrected)
September 26, 2014 West Nile Virus (WNV) Update
September 8, 2014 West Nile Virus Update
August 18, 2014 Update on California’s Pertussis Epidemic
August 1, 2014 West Nile Virus Update
June 6, 2013 West Nile Virus (WNV) Season is Here!
March 1, 2013 Summary Report for the 2012 West Nile Virus (WNV) Season
October 4, 2012 Orange County continues to receive reports of WNV infection.
September 14, 2012 Additional WNV infections have been reported in Orange County.
August 27, 2012 Increased West Nile Virus (WNV) activity has been noted in many areas of the U.S. in recent weeks, including Orange County.
August 1, 2012 Orange County reports its first West Nile Virus human infection of the season!
July 18, 2012 Atypical Hand, Foot, and Mouth Disease - Coxsackievirus A6; Summer Influenza
June 28, 2012 First West Nile Virus-positive mosquito pool of the season; Typhus update
December 9, 2011 Summary report for the 2011 West Nile Virus season
October 3, 2011 Orange County Public Health has updated the list of reportable diseases, following recent changes made by the California Department of Public Health (CDPH).
August 26, 2011 Orange County reports its first human West Nile Virus case of the season; Typhus Update
May 11, 2011 Orange County reports its first West Nile Virus positive bird of the season!
Making Orange County a safe, healthy, and fulfilling place to live, work, and play, today and for generations to come, by providing outstanding, cost-effective regional public services.
You Are Now Leaving the County of Orange Official Portal