A person cannot get HIV from masturbation. AIDS is mainly transmitted through contact between the sexes, or through same-sex contact. The body fluids of people with AIDS, such as blood, vaginal secretions, semen, and breast milk, can contain HIV, and if the mucous membranes of the skin are broken during sexual contact and a large amount of HIV is exposed, it is easy to get infected with AIDS. AIDS can also be transmitted through blood, which means that a person can become infected by importing HIV-infected blood or blood products, receiving HIV-infected tissues or organs, or being pricked by HIV-contaminated needles. HIV can also be transmitted vertically from mother to child.