What is HIV?

• A. Human immunodeficiency virus which eventually can cause AIDS due to weak immune system
• B. A disease of the teeth enamel
• C. A fungal infection
• D. A neurological disorder

Answer: (A)

HIV stands for Human immunodeficiency virus, a virus that attacks the body’s immune system, especially the CD4 T cells. Over time, its attack can weaken the immune system so it can’t fight infections well, and this progression can lead to AIDS, a stage where opportunistic infections become a risk. This is why the statement is correct: it identifies the virus and explains how it harms immunity. The other descriptions describe conditions unrelated to HIV—teeth enamel disease, a fungal infection, or a neurological disorder—so they don’t fit. In dental practice, it’s important to use standard infection control because HIV is transmitted through blood and certain body fluids, not through casual contact.