What does it mean when hiv turns into aids?

Answer 1

You don't catch AIDS, you catch the HIV virus. HIV is a virus that attacks a certain very important type of immune system cells. After it invades these immunity support cells it spreads through them. As the number of these cells dwindles your immune system becomes less and less effective at defending against diseases. When the number of these immunity helping cells falls below a certain number the person is defined to have AIDS. So AIDS is not a disease, it is an "acquired immunodeficiency syndrome" resulting from the loss of these immunity cells. People do not die of AIDS, instead their body becomes incapable of defending against common diseases such that even a common cold can kill them.