Sexual contact with a person who has AIDS without a break in the skin also carries a certain risk of contracting AIDS. HIV can be transmitted through sexual contact, blood, and mother-to-child transmission. Sexual contact is the most important way of transmission. Although there is no obvious skin damage when having sex with HIV carriers, friction during sex can cause minor damage to the skin and mucous membranes, which allows HIV to invade the healthy organism and thus infect the body with HIV. If you have had sexual contact with a person with HIV, you should seek medical attention without delay, regardless of whether or not there is a skin lesion, to avoid delaying your condition. Early diagnosis and treatment.