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Communicable Disease Control Division

The Communicable Disease Control 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. 

Latest News and Health Advisories

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CAHAN - Outbreak of Extensively Drug-resistant Pseudomonas aeruginosa Associated with Artificial Tears

The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory about infections with an extensively drug-resistant strain of Verona...

CAHAN - Increase in Pediatric Invasive Group A Streptococcal Infections

The Centers for Disease Control and Prevention (CDC) issued a Health Alert Network (HAN) Health Advisory to notify clinicians and public health authorities of a recent increase in...

CAHAN - Interim Guidance for Clinicians to Prioritize Antiviral Treatment of Influenza in the Setting of Reduced Availability of Oseltamivir

Seasonal influenza activity is high across the United States. The Centers for Disease Control and Prevention (CDC) estimates that in the 2022-2023 season to date, there have been...

CD HEALTH ALERT: Updated Recommendations for the Use of Bivalent COVID-19 Vaccines for Children Down to 6 Months of Age

Last week, the FDA authorized the use of bivalent COVID-19 vaccines for children down to six months of age; the CDC then expanded its recommendations for the use of bivalent COVID...

CAHAN - Reminder to Prescribe COVID-19 Therapeutics to Mitigate Impact of Winter Respiratory Surge

Once an individual is diagnosed with COVID-19, early treatment with COVID-19-specific agents is the only existing strategy to markedly decrease risk of serious illness. There is...

CD HEALTH ALERT: Monkeypox (MPX) in Orange County Updated Guidance on Exposures

On November 17, 2022, the CDC released Health Update, Managing Monkeypox in Patients Receiving Therapeutics . While cases rates have declined, new cases continue to be identified...

CD HEALTH ALERT: Increasing Influenza and Respiratory Syncytial Virus Disease in Orange County and the Potential “Tripledemic”

In the last several weeks, OCHCA has continued see a rise in influenza cases in the county that is early and steep and suggests that our county will experience a severe influenza...

CD HEALTH ALERT: Risk of Nontuberculous Mycobacteria Infections Associated with Contamination of Dental Waterlines

The Centers for Disease Control and Prevention (CDC) released a Health Advisory (HAN) linked here about a number of outbreaks of nontuberculous Mycobacteria (NTM) among children...

CD HEALTH ALERT: Avian Influenza (AI) In Orange County

Avian influenza A(H5N1) has been identified in United States wild birds, commercial poultry, and backyard flocks since January 2022. Recently, the first confirmed cases of H5N1...

CD HEALTH ALERT: Increasing Influenza and Respiratory Syncytial Virus (RSV) Disease in Orange County

Influenza virus and respiratory syncytial virus (RSV) disease have been increasing in Orange County for the last several weeks. Compared to pre-pandemic epidemiology this is an...

CAHAN - Outbreak of Ebola virus disease (Sudan ebolavirus) in Central Uganda

The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory about a recently confirmed outbreak of Ebola virus disease (EVD) in...

CAHAN - Early Respiratory Syncytial Virus Activity and Use of Palivizumab

The Health Advisory below discusses an early increase in respiratory syncytial virus (RSV) activity in California. Providers are advised to consider testing for additional...

CD HEALTH ALERT: Monkeypox (MPX) in Orange County - Updated Guidance on Exposures

As of Friday, September 9, 191 confirmed or probable MPX cases have been identified among Orange County residents. Over the last several weeks there has been a leveling off in the...

CD HEALTH ALERT: Orange County’s First Human West Nile Virus Case of the Season Reported

A man in his 60s has tested positive for West Nile Virus (WNV) infection, becoming the first human WNV infection in Orange County this year. As of August 5th, the California...

CD HEALTH ALERT: Monkeypox/Orthopoxvirus Testing via Commercial Laboratories

In the last week several commercial laboratories (Labcorp, Mayo Clinic Laboratories, Quest) have announced availability of monkeypox testing. Additional commercial laboratories are...

CD HEALTH ALERT: New Influenza Vaccine Recommendations for 2022-2023: Preference for High-Dose or Adjuvanted Vaccines for Those 65 Years and Older

On June 22, 2022, the Centers for Disease Control and Prevention's (CDC) Advisory Committee on Immunization Practices (ACIP) reviewed its recommendations for influenza vaccines for...
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Communicable Disease Control

1719 W. 17th Street, Santa Ana
Investigates individual cases and outbreaks of reportable communicable diseases in order to prevent their spread. Monitors and analyzes trends in reportable communicable diseases and provides information to doctors, hospitals, the public and news media.

 

Office of Vital Records

200 W. Santa Ana Blvd., Suite #100-B, Santa Ana
Registers all births and deaths that occur in Orange County. Issues applications for burial permits. Provides for sale to the public certified copies of Orange County birth and death certificates.

 

IAP

Immunization Assistance Program

1719 W 17th Street, Santa Ana
The Immunization Assistance Program (IAP) is part of the Family Health Division in Public Health Services for the Orange County Health Care Agency.
IAP assesses and supports immunization infrastructure in County public health clinics, community clinics, schools, and day care centers. IAP is a member and supporter of the Orange County Immunization Coalition (OCIC).

 

Medical Marijuana Identification Card Program

200 W. Santa Ana Blvd., Suite #100-B, Santa Ana
The California Department of Health Services (CDHS) manages the State's MMP as authorized by SB 420. Each county is responsible for implementing their own Medical Marijuana Program. Orange County has named their program: Medical Marijuana Identification Card Program (MMIC).