1. AIDS is a disease affecting humans and animals, caused by infection with the HIV virus. HIV is a virus that attacks the body's immune system. It targets the most important T4 lymphoid tissue in the human immune system, destroys T4 lymphoid tissue in large quantities, and causes highly fatal failure. This virus spreads throughout the region for life, destroys people's immune balance, and makes the human body a carrier of various diseases. HIV itself does not cause any disease, but when the immune system is destroyed by HIV, the body's resistance is too low and the immune cells lose the opportunity to contract other diseases, leading to various composite infections and death. The average incubation period of HIV in the human body is 9 to 10 years. Before developing into an AIDS patient, the patient looks normal and can live and work without any symptoms for many years.

2. Prevention: adhere to cleanliness and self-respect, do not engage in prostitution or whoring, and avoid premarital or extramarital sex; it is strictly forbidden to take drugs, and do not use syringes with others; do not transfuse blood or use blood products without authorization, and Use under the guidance of a doctor; do not borrow or use personal items such as toothbrushes, razors, razors, etc. HIV-infected women should avoid pregnancy and breastfeeding; using condoms is the most effective way to prevent STDs and AIDS during sex. One of the measures is to avoid direct contact with the blood, semen, milk and urine of AIDS patients and cut off their transmission routes.