Contrary to popular belief, HIV is not necessary to explain acquired immune deficiency and the illnesses associated with AIDS. To understand why this is so, it is first necessary to understand what AIDS is. AIDS is not a new disease or illness; it is a new name or designation for 29 previously known diseases and conditions. As the NIH states in its comprehensive report on AIDS, "the designation 'AIDS' is a surveillance tool."191 Since 1981, the surveillance tool AIDS has been used to track and record familiar diseases when they appear in people who have tested positive for antibodies associated with HIV.