AIDS is caused by which virus?

AIDS, or Acquired Immunodeficiency Syndrome, is specifically caused by the Human Immunodeficiency Virus (HIV). This virus attacks the immune system, particularly the CD4 cells (T cells), which play a crucial role in helping the body fight off infections. Over time, as HIV destroys these cells, the body becomes more susceptible to opportunistic infections and certain cancers, leading to the progression of HIV to AIDS.

HIV is primarily transmitted through the exchange of bodily fluids such as blood, semen, vaginal fluids, and breast milk, often through activities like unprotected sexual contact, sharing needles, or from mother to child during childbirth or breastfeeding. Understanding that AIDS results from the long-term effects of HIV infection is vital for awareness and prevention strategies regarding sexually transmitted infections and overall health.

In contrast, other viruses mentioned, such as Hepatitis B, Influenza, and HSV (Herpes Simplex Virus), are associated with different health conditions and do not cause AIDS.