To be diagnosed as having AIDS, the patient must be HIV-positive, have a compromised immune system without known immune system disease or recent organ transplant, and present with which of the following?
a. Opportunistic infection
b. A positive ELISA or Western blot test
c. Weight loss, fever, and generalized lymphedema
d. CD4+ lymphocyte count less than 200 mm3
ANS: D
The 1993 expanded case definition of AIDS includes all HIV-infected people who have CD4+, T-lymphocyte counts of less than 200 cells/mm3; this includes all people who have one or more of these three clinical conditions: pulmonary tuberculosis, recurrent pneumonia, or invasive cervical cancer, and it retains the 23 clinical conditions listed in the 1987 AIDS case definition.
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