Table 2.

Antigen recognition by serum IgG antibodies in TB patients

AntigenNo. (%) of responders% of high-level responders among total responders
TotalaHigh levelb
ESAT-612 (20)9 (15)75
14 kDa26 (44)20 (34)73
MPT639 (15)7 (12)78
19 kDa23 (39)10 (17)50
MPT647 (12)4 (7)57
MPT515 (8)0 (0)0
MTC2816 (27)7 (12)38
Ag85B10 (17)2 (3)20
38 kDa15 (25)8 (14)53
KatG8 (14)2 (3)25
  • a TB patients having antibody levels greater than or equal to the mean OD450 plus 3 SD, obtained with negative control sera.

  • b TB patients having antibody levels greater than or equal to the mean OD450 plus 6 SD, obtained with negative control sera.