Figure 2

Proportion of positive ELISPOT IFN-γ responses to M. tuberculosis-specific antigens (ESAT-6 and/or CFP-10) among HIV- controls (n = 30) compared to HIV+ patients (n = 40) stratified by CD4 cell count >100 cells/μl (n = 23) or <100 cells/μl (n = 17) and according to history of recent TB treatment (n = 19) or no history of such treatment (n = 21). ns = not significant