HIV stands for Human Immunodeficiency Virus. It attacks and destroys CD4 cells of the immune system, weakening the body's ability to fight infections and disease. While there is no cure for HIV/AIDS, early testing and treatment can prevent transmission and manage the virus. The document outlines that HIV is transmitted through contact with infected blood, semen, vaginal fluids, or breast milk. It also discusses HIV risk factors, prevention methods like condom use and antiretroviral therapy, and notes that HIV is not spread through everyday contact like hugging or sharing objects.