HIV is a deadly disease spread via positive body fluids that assaults the frame’s immune gadget, mainly the CD4 cells, regularly called T cells. Over time, HIV can wreck so many of those cells that the frame can’t fight off infections and disease. These special cells assist the immune gadget combat off infections. Untreated, HIV reduces the number of CD4 cells (T cells) within the frame. This harm to the immune machine makes it harder and tougher for the body to combat off infections and some different diseases. Opportunistic infections or cancers take advantage of a very vulnerable immune gadget and signal that the individual has AIDS. Learn more about the tiers of HIV and the way to know whether you have got HIV.