Acute Communicable
Disease Control

Contact Information
County of Los Angeles
Department of Public Health
Acute Communicable Disease Control
313 N. Figueroa Street, #212
Los Angeles, CA 90012
Phone: (213) 240-7941
Fax: (213) 482-4856

Call 211 For Information 24/7

Have questions about things like where to go for vaccinations or other health care services?

Call 2-1-1.

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Acute Communicable Disease Control
Provider Communicable Disease Reporting in Los Angeles County

What communicable diseases must be reported?

Healthcare providers are required by California law to report a variety of suspected or confirmed communicable diseases as well as outbreaks of any disease California Code of Regulations, Title 17§2500).

State law defines a “health care provider" as a physician and surgeon, veterinarian, podiatrist, nurse practitioner, physician assistant, registered nurse, nurse midwife, school nurse, infection control practitioner, medical examiner, coroner, or dentist.

Information on reporting COVID-19 outbreaks or clusters provided below.

How to report:

If the case resides in LA County, providers must report the case through the LA County Department of Public Health Communicable Disease Reporting System.

Certain diseases as well as all outbreaks, and occurrences of unusual diseases must be reported by phone. See page 2 of  LA County Provider Reportable Diseases and Conditions List for a breakdown by reporting priority.

Telephone reporting:

  • (888) 397-3993
  • 213-2407941

To report a non-urgent disease:

If the case resides in Long Beach, Pasadena, or other countries, please consult the appropriate health department. See CDPH Local Health Districts.

When to report?

Certain communicable diseases, outbreaks, and the occurrence of any unusual disease are considered emergencies and must be reported immediately. See the LA County Provider Reportable Diseases and Conditions List for the mandated timing for reporting different communicable diseases and conditions.

Why report?

What is an unusual disease?

An “unusual disease” is a rare disease or a newly apparent or emerging disease or syndrome of uncertain etiology which a health care provider has reason to believe could possibly be caused by a transmissible infectious agent or microbial toxin.

Reporting COVID-19 Outbreaks or case clusters.

In LA County, all facilities outlined in the County Health Officer Order are required to report clusters of COVID-19 cases.

To return to the Disease Reporting Page for Health Professionals, click HERE. 


County of Los Angeles
Reportable Diseases
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    Public Health has made reasonable efforts to provide accurate translation. However, no computerized translation is perfect and is not intended to replace traditional translation methods. If questions arise concerning the accuracy of the information, please refer to the English edition of the website, which is the official version.
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