High Quality Content by WIKIPEDIA articles! AIDS denialism is the view held by a loosely connected group of people and organizations who deny that the human immunodeficiency virus (HIV) is the cause of acquired immune deficiency syndrome (AIDS). Some denialists reject the existence of HIV, while others accept that HIV exists but say that it is a harmless passenger virus and not the cause of AIDS. Insofar as denialists acknowledge AIDS as a real disease, they attribute it to some combination of sexual behavior, recreational drugs, malnutrition, poor sanitation, hemophilia, or the effects of the drugs used to treat HIV infection.