AIDS: Acquired Immune Deficiency Syndrome and HIV affect more than roughly thirty million people worldwide. It is now generally accepted that HIV is a descendant of simian (monkey) immunodeficiency virus (SIV). Certain simian immunodeficiency viruses bear a very close resemblance to HIV-1 and HIV-2, the two types of HIV. But how did it transfer to humans? It has been known for a long time that certain viruses can pass from animals to humans, and this process is referred to as zoonosis. The researchers concluded that HIV could have crossed over from chimpanzees as a result of a human killi…
