Some of the body fluids that can contain high levels of the HIV virus include: semen and pre-seminal fluid (cum and pre-cum), vaginal secretions, blood, and anal mucous. Other body fluids such as, vomit, saliva, sweat, tears, urine, nasal fluid, etc. do not contain high enough levels of the virus to be infectious unless they contain blood. And, even if they do contain blood one needs to have had direct contact with a significant amount to become infected. Some of the ways that transmission can happen is through sexual contact, during pregnancy, childbirth, and breastfeeding, blood transfusions or an organ transplant, and/or occupational exposure (healthcare workers). AIDS develop once your immune system has been destroyed by the HIV virus and your body can no longer protect itself. Learn more about getting tested.