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Unit 7 Living With Disease What is AIDS? AIDS stands for Acquired Immune Deficiency Syndrome and it is caused by the Human Immunodeficiency Virus (HIV). When HIV enters the human body, it will attack the CD4 cells, a kind of white blood cells, and destroy the human immune system making the infected vulnerable to attack by virus and bacteria. With the immune system destroyed, the infected will often die as a result of attack by a certain disease or diseases of different kinds. December 1st Live And Let Live Transmission through blood could be a res