HIV Surveillance

The California Department of Public Health (CDPH) Office of AIDS (OA) works with local health jurisdictions to collect, analyze, and disseminate surveillance data on people living and diagnosed with HIV in California. HIV surveillance is conducted through three different activities.

HIV Case Surveillance

Health care providers and clinical laboratories provide HIV case surveillance data to local health jurisdictions and the Office of AIDS as a routine public health activity required by state law (California HSC 121022 and HSC 120130). Demographic and clinical information is collected on all people living and diagnosed with HIV in California.

• HIV Surveillance Reports
• HIV Case Reporting Resources

Medical Monitoring Project

The California Department of Public Health (CDPH), Office of AIDS (OA) conducts the U.S. Department of Health and Human Services' Centers for Disease Control and Prevention (CDC), Medical Monitoring Project (MMP), a surveillance project designed to produce nationally representative data about the health-related experiences and needs of persons living with HIV (PLWH) in the United States and California. The CA MMP Project Area is one of 23 state or local health department that conduct MMP nationwide. In California, Los Angeles and San Francisco counties also conduct MMP through the local health departments.

National HIV Behavioral Surveillance System​

​​The National HIV Behavioral Surveillance (NHBS) System is a national health survey that collects information on sexual risk, drug use, HIV testing behaviors, and HIV seroprevalence from populations at highest risk for HIV infection—men who have sex with men, people who inject drugs and  low-income heterosexual people. NHBS collects data from these populations each year on a rotating basis. NHBS is designed, coordinated, and funded by the Centers for Disease Control and Prevention (CDC). San Diego County is one of approximately 20 areas across the nation currently participating in NHBS, with data collection conducted by the California Department of Public Health, Office of AIDS with assistance from Family Health Centers of San Diego. In California, Los Angeles and San Francisco counties also conduct NHBS through the local health departments.

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To request data from OA, please email HIV.Data@cdph.ca.gov with the details of the request. See also the California Open Data Portal​ for publicly available datasets.