AIDS is a contagious disease, and the conditions for infection include the source of infection, the way of transmission, a certain amount of virus, and susceptible people, etc. 1.
1. Source of infection: People infected with HIV are the source of AIDS, including HIV-infected people and AIDS patients. HIV mainly exists in the blood, semen, vaginal secretions, cerebrospinal fluid, pleural and abdominal fluid, as well as amniotic fluid, breast milk and other bodily fluids of the source of infection.
2. Transmission: The transmission of HIV requires the contact of broken mucous membranes or skin with the infected person’s body fluids containing the virus, and its transmission channels include sexual contact, blood and blood products, and mother-to-child transmission.
3. A certain amount of virus: a sufficient amount of virus is a necessary condition to cause the spread of HIV, if the amount of virus is insufficient, the infectiousness caused by it will be low or non-infectious.
4. Susceptible people: People all over the world, regardless of age, gender and race, are generally susceptible to HIV. Among them, men who have sex with men, intravenous injectors, people who have sexual contact with HIV/AIDS patients, and people in sexually transmitted infections (STIs) groups all belong to high-risk groups.
Therefore, in daily life, we should pay attention to cleanliness, avoid high-risk sexual behavior, and go to the hospital in time to consult a doctor if there are symptoms of physical discomfort.