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Table 1 Disease Stage for 142 HIV infected Nigerian patients using the 1993 Revised CDC Classification System for HIV Infection

From: The impact of Highly Active Antiretroviral Therapy (HAART) on the clinical features of HIV - related oral lesions in Nigeria

CD4+ T cell categories (cells/mm3) Clinical categories
  A B C
  Asymptomatic, acute (primary) HIV Symptomatic, not A or C Conditions AIDS Indicator Conditions
≥500 A1 (1) B1 (0) C1 (0)
200-499 A2 (10) B2 (12) C2 (16)
<200 A3 (19) B3 (35) C3 (44)
  1. Persons in categories A3, B3, C1, C2, and C3 have AIDS under the 1993 surveillance case definition i.e. 19 + 35 + 44 + 16 = 114. This gives 83.2% for the proportion with AIDS (computed with 137 as the total number due to 5 missing CD4 counts)