Any discussion of the impact of acquired immune deficiency syndrome (AIDS) on health care systems must distinguish between treatment of the opportunistic illnesses associated with AIDS and treatment directed at the underlying cause, namely, the human immunodeficiency virus (HIV). Treatment of opportunistic illnesses can alleviate suffering but typically extends life by only months. Treatment that controls the HIV in the patient’s body, called antiretroviral therapy or ART, can be much more successful, adding years to life expectancy.
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