HIV is found in specific human body fluids. If any of those fluids enter your body, you can become infected with HIV.
AIDS is the late stage of HIV infection, when a person’s immune system is severely damaged and has difficulty fighting diseases and certain cancers. Before the development of certain medications, people with HIV could progress to AIDS in just a few years. Currently, people can live much longer – even decades – with HIV before they develop AIDS. This is because of “highly active” combinations of medications that were introduced in the mid-1990s. Read more about how HIV causes AIDS.