Diseases & Conditions

Acquired immunodeficiency syndrome (AIDS) is a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV). By damaging your immune system, HIV interferes with your body's ability to fight infection and disease.

Learn about California's response to HIV/AIDS by visiting the California Depart of Public Health's (CDPH) Office of AIDS webpage.

Did you know Californians can now access Pre-Exposure Prophylaxis (PrEP) or Post-Exposure Prophylaxis (PEP) at some pharmacies without needing to visit a doctor? In 2019, the California Legislature passed Senate Bill 159, which allows pharmacists to initiate and dispense PrEP and PEP to an HIV negative person without a prescription.

The National AIDS Hotline (NAH), a service of the Centers for Disease Control and Prevention (CDC), is an information resource for the population of the United States, concerning the human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS). Services are available to English-speaking, Spanish-speaking, and deaf populations at the following phone numbers:

  • English-speaking: 800-342-2437
  • Spanish-speaking: 800-344-7432
  • TTY service for the deaf: 800-243-7889