Dr Loice Ombajo, Infectious Disease Specialist: HIV is a virus. What happens is that when someone gets infected with this virus, the virus fights the immune cells so it reduces the immune cells and we need these immune cells in order to fight infections. When this immunity goes down, infections that normally would not cause infections in someone whose immunity is well, begin to attack the body. Without treatment, this virus attacks the immune cells. When someone gets to that point where they get