TST and tuberculosis: When results from all sites were combined, HIV- patients with active TB showed significantly lower responses compared to both TST- and TST+ (LTBI) contacts to latency antigens (Rv0569, Rv1733, Rv1735, Rv1737) and the rpf Rv0867; whilst responses to EC, PPD, Rv2029, TB10.3, TB10.4 and PHA were significantly higher in TST+ HCC (LTBI) compared to active TB and TST- HCC.