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Table 3 Comparison of the number of pigs in five herds found positive by ELISA using either whole cell (WC) or recombinant Bhlp29.7 as plate coating antigens with serum and meat juice samples, and specificity and sensitivity at the herd level

From: The use of ELISAs for monitoring exposure of pig herds to Brachyspira hyodysenteriae

  Serum Meat juice
  IgG IgM IgG IgM
Herd a WC Bhlp29.7 WC Bhlp29.7 WC Bhlp29.7 WC Bhlp29.7
A 0 0 1 0 0 0 0 0
B 0 0 0 0 0 0 0 0
C 1 1 2 2 3 1 4 1
D 2 0 1 1 1 1 0 1
E 2 1 4 2 3 1 3 1
Total positive in herds C-E 5 2 7 5 7 3 7 3
Specificity (%) 100 100 50 100 100 100 100 100
Sensitivity (%) 100 66.7 100 100 100 100 66.7 100
  1. a Herds A and B known not to be infected with B. hyodysenteriae. Fifty pigs were sampled from each herd.