It lives in Blood, Semen, and Vaginal Secretions.
if you mean in bodily functions then; blood, urine and vaginal secretions
Antigens do not protect the body from disease. Antibodies protect the body from many diseases.
Body fluids that can transmit HIV include blood, semen, vaginal secretions, breastmilk, cerebrospinal fluid, and synovial fluid. Saliva and urine are not infectious for HIV.
No, blood is not the only body fluid that can carry pathogens. Other body fluids such as saliva, urine, breast milk, and semen can also carry pathogens depending on the particular infection or disease present in the body.
The same way anyone else can get it...through open body to body contact with fliuds such as blood, semen, vaginal secretions and breast milk.
Immunity
If you knew what a disease was, you'd know that they are things that harm or kill people. Then you'd know why the body needs to protect against them.
Bactericidal secretions are a type of physical barrier that helps protect the body from harmful bacteria. These secretions contain substances that are toxic to bacteria, disrupting their cell walls and leading to their destruction. Examples include lysozyme in tears and saliva.
A vaccines helps because they put some of the disease in your body then your body can get use to it so if you get that disease your body can easily fight it out of you!
Active vaccination produces antibodies against the particular organism. These antibodies kill the invading pathogen and protect the body against the disease.
pertains to blood and body fluids containing visible blood, semen, vaginal secretions as well as tissue and synovial fluids