If you’ve heard of the term AIDS, it’s actually the short form for Acquired Immune Deficiency Syndrome. AIDS is the disease caused by HIV (Human Immunodeficiency Virus).
Basically, AIDS is the term for the disease when a person’s immune system becomes so badly damaged that it can’t protect their body from infections any more. The reason this is so serious is because there is no cure and your body is unable to protect itself properly. You can reduce the risk of contracting HIV, a blood and semen based virus by always using a condom. You can find out more about HIV here.