HIV (Human Immunodeficiency Virus) is a virus that attacks the body's immune system, specifically the CD4 cells (T cells), which can lead to AIDS (Acquired Immunodeficiency Syndrome) if not treated. HIV is transmitted through blood, semen, vaginal fluids, rectal fluids, and breast milk. Common modes of transmission include unprotected sexual contact, sharing needles, and transfusions of contaminated blood.
