<prompt> A patient with human immunodeficiency virus HIV infection has progressed to developing AIDS clinical category C. Which of the following conditions is considered an AIDS-defining illness?antibodies to HIVpalpable lymphadenopathyKaposi sarcomaoral candidiasis thrush  <response>: The current case definition of AIDS in a patient with HIV infection is done by symptoms and CD4 T-lymphocyte cell count. Any category C symptoms e.g., cervical cancer, mycobacterium avium infection, CMV, retinitis, Kaposi sarcoma, etc. indicates frank AIDS as does a CD4 T-cell count 200mL regardless of symptoms. Shingles and thrush are category B symptoms. 