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HIV Epidemiology


HIV Epidemiology

Contact Information
Los Angeles County
Department of Public Health
HIV Epidemiology, DHSP                       600 S. Commonwealth Ave. Suite 1920
Los Angeles, CA 90005
Phone: (213) 351-8196
Fax: (213) 487-9386


        LAC's ZIP code level data/maps on HIV

HIV Epidemiology - HIV Reporting from Laboratories by Name

By recent passage of California Senate Bill 1184, signed by the governor on September 26, 2008, all CD4 + T-Cell test results are now reportable in California. Laboratories must now report all CD4 + T-Cell test results to their local health department within 7 days, in addition to the existing requirements to report any laboratory test used to identify HIV or antibodies or antigens to HIV.

Laboratories are responsible for reporting ALL CD4 T-Cell test results (not just those < 200/ul or < 14%), as well as any HIV-indicative test – including all viral loads (even if undetectable) and confirmed antibody tests – to the Health Officer of the local health jurisdiction where the health care provider facility is located. The Health Officer’s designee – HIV Epidemiology Program – will follow-up with health care providers for laboratory reports you send to us to complete the HIV/AIDS registry.

Effective January 1, 2010, Assembly Bill 1045 (Perez, Chapter 501, Statutes of 2009) allows that clinical laboratories demonstrating that a CD4+T-cell test is not related to a diagnosed case of HIV are not mandated to report that CD4+ T-cell test result to the local health officer.

In June 2013, the California Office of Administrative Law (OAL) approved the request for emergency regulations that will allow California laboratories to use the new HIV testing algorithm recommended by the Clinical and Laboratory  Standards Institute (CLSI) and proposed by the CDC and APHL. For more details, please see the link.

To submit the test results, laboratories can either report manually or electronically.  The following forms and documents can be downloaded for HIV lab test reporting. If you would like to report an HIV case, or have any questions retrieving these files, please call the HIV Reporting Help Desk at (213) 351-8516.

Manual Lab Test Reporting - complete one of the following forms, insert in doubled envelops and mail to Department of Public Health, Los Angeles County, 600 S. Commonwealth Ave, Suite #1260, Los Angeles, CA 90005.

Electronic Lab Test Reporting - All of the electronic lab test report data need to be encrypted before being sent to the HIV Epidemiology Program in LA County. The encrypted file can be saved in a diskette or CD Rom, double enveloped, and mailed via a reliable carrier to Department of Public Health, Los Angeles County, 600 S. Commonwealth Ave, Suite #1260, Los Angeles, CA 90005. If you would like a free copy of an encryption software or set up other means of data transmission Please contact the HIV Reporting Help Desk at 213-351-8516 or

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