Human immunodeficiency virus (HIV) is a kind of lentivirus that infects cells of human immune system, belonging to retrovirus.
1983, the human immunodeficiency virus was first discovered in the United States. Viruses destroy the immune ability of human body and make the immune system lose its resistance, which leads to the survival of various diseases and cancers in human body, and finally leads to AIDS.
2065438+On March 4th, 2005, scientists from many countries discovered that four known strains of HIV came from chimpanzees and gorillas in Cameroon, which was the first time to completely identify all the sources of HIV strains.