Acquired immune deficiency syndrome (AIDS) is not a single disease. It is a diagnosis that results from a spectrum of conditions that can occur when a person’s immune system is seriously damaged after years of attack by HIV. The terms HIV and AIDS are not interchangeable, but it is possible to move in and out of an AIDS diagnosis. It is important to remember that a person who is infected with HIV does not necessarily have AIDS. However, all people with AIDS have HIV.
HIV damages the body’s immune system and renders the body vulnerable to other diseases and infections – its symptoms are most commonly similar to those of any chronic viral infection. During advanced stages of HIV infection, a person may develop any of a number of opportunistic infections considered to be AIDS defining illnesses.
Despite advances made over the course of the epidemic HIV and AIDS are still here and there is no cure or vaccine.