What is HIV? | Viruses
What is HIV? The Human Immunodeficiency Virus, or HIV, consists of two types: HIV 1 and HIV 2, which can be subdivided into different subtypes depending on the location of the outbreak. In all probability, HIV originates from a similar virus type. This affects chimpanzees and is called SIV, Simian Immunodeficiency Virus. The transmission and … What is HIV? | Viruses