Abstract: HIV (Human immunodeficiency Virus) is retroviruses that gradually attack the immune system, which protects human body against illness. HIV infected person becomes an easy target for opportunistic infection and disease. This virus multiplies in T- helper cell (CD4) and gradually platelets themhe two main types are HIV-1 and HIV-2 is the most common type found wildlife, however HIV-2 is found mainly in western Africa, with some case In India and Europe. Currently around 15 molecules are being use in different treatment regimens to treat HIV infection however, issue like treatment failure due to drug resistance and toxicity remains crucial issue.
Keywords: HIV, Human immunodeficiency Virus, HIV-1, HIV-2