TABLE 4

All mutants detected in each experimental group in initial and confirmatory screensa

Screen and groupSignature tags detected (no. of times detected)
Air sacsTrachea
Initial screen
    Ab16-1 (1),c 20-1 (2)c07-1 (3), 11-1 (1), 12-1 (4), 14-1 (1), 18-1 (1), 19-1 (2), 20-1 (6), 21-1 (1), 24-1 (6), 26-1 (1), 27-1 (2), 31-1 (1), 32-1 (1), 35-1 (1), 38-1 (1)
    B12-2 (1), 20-2 (1)07-2 (1), 11-2 (1), 12-2 (3), 14-2 (1), 16-2 (1), 20-2 (6), 27-2 (1)
    Cd11-2 (1), 12-2 (1), 16-2 (3), 18-2 (1), 20-2 (7), 27-2 (1)01-3 (1), 02-3 (8), 11-3 (1), 12-3 (5), 13-3 (1), 14-3 (1), 16-3 (3), 18-3 (1), 20-3 (10), 24-3 (5), 27-3 (6), 36-3 (1), 38-3 (2)
Confirmatory screene
    A03-1 (1), 09-1 (1), 10-1 (2), 15-1 (1), 23-1 (2)02-2 (4), 03-1 (2), 04-3 (1), 09-1 (3), 10-1 (10), 15-1 (1), 17-2 (12), 23-1 (2), 25-1 (1), 34-1 (1)
    B09-3 (2), 17-3 (1), 23-1 (2)02-2 (1), 03-1 (1), 09-3 (14), 10-1 (5), 15-1 (2), 17-3 (10), 23-1 (15), 25-1 (3), 34-1 (2)
  • a Birds in group A were inoculated with a pool containing ST mutants 02-2, 03-1, 04-1, 06-1, 09-1, 10-1, 15-1, and 17-2; birds in group B were inoculated with a pool containing ST mutants 04-3, 09-3, 17-3, 22-1, 23-1, 25-1, 33-1 and 34-1. The following tags were not detected in the initial screen: 02-2, 03, 04-3, 09, 10, 15, 17, 22, 23, 25, and 34. The following mutants have been described previously (5): 02-1; 04-1; 06-1, -2, and -3; 28-1, -2, and -3; 33-1, -2, and -3; and 39-1, -2, and -3.

  • b One inoculated and two in-contact birds in group A died prior to necropsy.

  • c Including recovery from one bird in the in-contact group at 4 weeks after inoculation.

  • d Two in-contact birds in group C died prior to necropsy.

  • e One bird each in groups A and B died before necropsy.