Table 6. Proposed classification system for an HIV-infected Indian population.

	Clinical categories
	A	B	C
CD4+ T-cell count (cells/µl.) (CD4%)	Asymptomatic, acute (primary) HIV or PGL*	Symptomatic, not A or C conditions†	AIDS-indicator conditions‡
> 475 (18%)	A1	B1	C1
251–475 (11–18%)	A2	B2	C2
≤ 250 (10%)	A3	B3	C3

^*Category A: asymptomatic HIV infection, persistent generalized lymphadenopathy (PGL).

^†Category B: oropharyngeal and vulvovaginal candidiasis, constitutional symptoms such as fever (38·5°C) or diarrhea lasting >1 month, herpes zoster (shingles).

^‡Category C: Mycobacterium tuberculosis (pulmonary and disseminated), Pneumocystis carinii pneumonia, candidiasis of bronchi; trachea or lungs, extrapulmonary cryptococcosis, CMV, HIV-related encephalopathy, Kaposi's sarcoma, wasting syndrome due to HIV.