AIDS is the abbreviation for AIDS, the full name of which is Acquired Immune Deficiency Syndrome. There are three ways of transmission of AIDS: blood, sex and mother-to-child. the conditions for the spread of AIDS are source of infection, route of transmission and susceptible population. Generally speaking, the sources of AIDS are people with AIDS and people living with HIV. The modes of transmission of AIDS are blood, sexual and mother-to-child. The susceptible groups are all people, with high risk groups being intravenous drug users, men who have sex with men, multiple sex partners, and infants and children born to HIV-positive mothers. Symptoms of AIDS include headache, fatigue, loss of appetite, fever, nausea and night sweats. In the later stages of the disease, the immune system of AIDS patients is extremely low and they are susceptible to viral, bacterial and fungal infections. People should be more aware of the prevention of AIDS and should reduce the spread of AIDS from the root cause. If you are an AIDS patient, you should actively cooperate with the doctor’s treatment.