The human immunodeficiency virus (HIV) attacks the immune system, making the body vulnerable to other infections and diseases. Acquired immunodeficiency syndrome (AIDS) is the most advanced stage of HIV infection, where the immune system is severely compromised. With proper treatment, many people with HIV never develop AIDS. What are HIV and AIDS? HIV (Human Immunodeficiency Virus):  A retrovirus that attacks and destroys the immune system's CD4 T-cells, which are critical f
