1. First reported cases of HIV/AIDS: The first cases of what would later be identified as HIV/AIDS were reported in the early 1980s in the United States, particularly among gay men in Los Angeles and New York City.
2. Discovery of HIV: In 1983, French researchers Luc Montagnier and Françoise Barré-Sinoussi identified a new retrovirus, which they named Lymphadenopathy-Associated Virus (LAV), later renamed Human Immunodeficiency Virus (HIV).
3. Development of HIV/AIDS tests: In 1985, the first blood test for HIV was developed, allowing for the detection of the virus in blood samples. This was a major breakthrough in the diagnosis and monitoring of HIV/AIDS.
4. Introduction of antiretroviral therapy: In the mid-1990s, the first antiretroviral drugs were introduced, which revolutionized the treatment of HIV/AIDS by slowing the progression of the disease and improving the quality of life for those living with the virus.
5. Global response to HIV/AIDS: In 2000, the United Nations established the Millennium Development Goals, which included a target to combat HIV/AIDS, leading to increased funding and resources for HIV/AIDS prevention, treatment, and research worldwide.