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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 - Adult and Adolescent Spectrum of Disease Project or "ASD"

ASD 2004 Annual Report (PDF format)


HEP, in collaboration with CDC, initiated the ASD Project in 1990 to better define the spectrum of HIV-related diseases. LAC is one of 10 municipal areas participating in the study.


To evaluate trends in the clinical course, treatment and health care utilization of persons living with HIV infection in LAC.

Study Design:

The ASD Project is a medical records-based cohort study. Data are collected from the medical records of HIV-infected patients 13 years of age and older receiving medical care at three outpatient clinics. The participating sites, which provide routine care to HIV-infected patients, are among the largest in the county and report approximately 28% of all the AIDS cases locally. These clinics were selected to be representative of the types of facilities providing HIV care in LAC and include two public clinics (Harbor-UCLA Medical Center, Los Angeles County/USC Medical Center), and a private health maintenance organization (Kaiser Permanente). Until 2001, a private medical practice (Beer Medical Group) was also included. Trained nurses and medical records technicians review medical records for basic demographic data, HIV-exposure category, AIDS-defining conditions, other infections and conditions, treatment and prophylaxis history, and laboratory data, including CD4+ lymphocyte count and viral load. The medical record is subsequently re-abstracted at 6-month intervals


Over 111 articles published in peer-reviewed publications and 150 presentations at scientific conferences have been based on ASD data.

Contact Persons:

Amy Wohl, Ph.D., Principal Investigator

Wendy Garland, M.P.H., Project Coordinator

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