HIV can be spread through casual contact with an HIV infected individual

One cannot become infected with HIV through day to day contact in social settings, schools, or in the workplace. One cannot be infected by shaking someones hand, by hugging or dry kissing someone, by using the same toilet or drinking from the same glass as an HIV infected person, or by being exposed to coughing or sneezing by an infected person, so even open mouthed kissing is considered a low risk. However, if the infected partner or both of the performers have blood in their mouth due to cuts, open sores, or gum disease, the risk is higher. The Centers for Disease Control and Prevention (CDC) has only recorded one case of possible HIV transmission through kissing (involving an HIV infected man with significant gum disease and a sexual partner also with significant gum disease.