艾滋病主要通过血液、性行为、母婴这三种传播途径由一个人传染给其他人。艾滋病的传播关键在于艾滋病病毒存在于人体的状况。艾滋病病毒存在于艾滋病病毒感染者和艾滋病病人的内脏、血液、精液、阴道分泌物及乳汁中,其中以血液、精液、阴道分泌物的病毒含量多,并且容易被他人接触,因此传染性最强。皮肤、粘膜的创口渗出液中也含有病毒,也具有传染性。唾液、泪水、汗液、尿液、粪便中可以检测到艾滋病病毒抗体,通常检查不到或只检查到少 AIDS is transmitted from one person to another mainly through the three routes of transmission of blood, sexual activity and maternal and infant. The key to the spread of AIDS is the status of HIV in the human body. HIV is present in the viscera, blood, semen, vaginal secretions and breast milk of people living with HIV and AIDS. Among them, blood, semen and vaginal secretions have high virus content and are easily exposed to others and are therefore most contagious . Skin, mucosal wound exudate also contains a virus, but also contagious. Saliva, tears, sweat, urine, stool can be detected in HIV antibodies, usually can not check or only check less