Human Immunodeficiency Virus damages the immune system. The Untreated HIV contaminates and damages CD4 cells. Thereafter HIV kills more and more CD4 cells, due to which body is bound to get different sorts of diseases and malignant growths. HIV is generally transmitted through organic liquids that incorporates blood, breast milk, semen, vaginal and rectal liquids. The infection generally does not spread through air, water or through easy-going contact