CD4 and infectious meningitis: HIV-infected adults with CD4+ cell counts ≤100 cells per microliter had a higher CFR compared to those with CD4+ cell counts >100 cells per microliter for meningitis cases (57.8% [63/109] vs. 38.8% [31/80], respectively; p = 0.01) as well as for non-meningitis cases (29.4% [124/422] vs. 9.8% [32/328], p<0.0001).