TABLE 2

Correlations between serum antibody responses and lesion and culture scores in pigs at bleeding (T3) and necropsy time (T4) using bPPD ELISA (anti-pig IgG and anti-pig IgM), DPP WildTB, and DPP VetTB tests

Antibody responses for test and timeData typeTotal lesion scoreThorax lesion scoreTotal culture scoreThorax culture scorea
OD for bPPD ELISA (time)
    Anti-IgM (T3)Correlation coefficient0.689b0.545c0.573c0.652b
2-tailed significance0.0010.0160.010.002
n19191919
    Anti-IgM (T4)Correlation coefficient0.484c0.3560.523c0.848b
2-tailed significance0.0360.1350.0220
n19191919
    Anti-IgG (T3)Correlation coefficient0.657b0.537c0.585b0.670b
2-tailed significance0.0020.0180.0090.002
n19191919
    Anti-IgG (T4)Correlation coefficient0.3940.290.4490.777b
2-tailed significance0.0950.2290.0540
n19191919
DPP for DPP WildTB mixture of MPB70 and MPB83 proteins at time:
    T3Correlation coefficient0.4360.2720.630b0.479c
2-tailed significance0.0710.2760.0050.044
n18181818
    T4Correlation coefficient0.3820.2110.537c0.348
2-tailed significance0.1070.3870.0180.144
n19191919
DPP for DPP VetTB MPB83, CFP-10/ESAT-6 at time:
    T3Correlation coefficient0.3050.1410.506b0.304
2-tailed significance0.2040.5660.0270.206
n19191919
    T4Correlation coefficient0.340.20.496c0.705b
2-tailed significance0.1540.4110.0310.001
n19191919
  • a Nonparametric Spearman correlations.

  • b Significant at the 0.01 level.

  • c Significant at the 0.05 level.