Immunology & HIV Practice Test

The method of transmission that is NOT associated with HIV is the transmission through airborne droplets. HIV is not transmitted via respiratory routes like viruses such as influenza or the common cold. Instead, HIV is primarily spread through specific bodily fluids including blood, semen, vaginal fluids, rectal fluids, and breast milk.

Unprotected sexual contact is a well-known method of transmission, as exposure to infected bodily fluids during sexual activities allows the virus to enter the bloodstream. Sharing needles or syringes is another significant risk factor, particularly among intravenous drug users, since it allows for the direct transfer of contaminated blood. Additionally, mother-to-child transmission can occur during childbirth or breastfeeding if preventive measures are not taken. These methods highlight how HIV requires access to the bloodstream or mucosal surfaces, which does not occur through airborne transmission.