AIDS, that is, acquired immunodeficiency syndrome, the English name is Acquired Immune Deficiency Syndrome, AIDS. It is a syndrome in which humans are infected with the Human Immunodeficiency Virus (HIV), which leads to immune deficiency and a series of opportunistic infections and tumors. In severe cases, it can lead to death. At present, AIDS has become a public health problem that seriously threatens the health of people around the world. HIV was first discovered in 1983. At present, AIDS has changed from a fatal disease to a controllable chronic disease.