HIV can only live parasitically in human blood and can easily die after leaving the body. According to the biological characteristics of HIV and its survival, we can know that the following situations will not spread AIDS: 1, gatherings, parades, watching movies, visiting stores or in crowded places; 2, kindergartens, schools to be group learning and living environment; 3, public entertainment and service places; public baths, public toilets, hairdressers, beauty parlors, hotels and travel agencies swimming pools, restaurants and canteens. 4.Social contacts of HIV-infected people: such as common meals, conversations, car rides or courtesy handshakes and hugs will not be infected; 5.Flies and mosquitoes can spread some infectious diseases, but they will not spread AIDS, because AIDS will not survive in these insects. Therefore, even if you live with AIDS patients in the same room, you do not have to worry about being infected by mosquito bites.