CD4 and AIDS: The 47 subjects with AIDS-KS were younger than the asymptomatic individuals (38.2 vs. 44.8 years, p < 0.0001), had a lower median log10 CD4+ level (127 vs. 559 mm3, p < 0.0001) and a higher circulating median log10 HIV titer/ml (2.4 vs. <1.0, p < 0.0001).