Skip to main content

Table 2 Tabulation of bTB test results by standard interpretation (positive, negative or inconclusive) SICCT, severe (sev.) interpretation SICCT, and Interferon-γ, and the percentage (%) which disclosed bTB visible lesions (VL) at slaughter

From: Bovine tuberculosis visible lesions in cattle culled during herd breakdowns: the effects of individual characteristics, trade movement and co-infection

 

Gamma negative/untested (% VL+)

Gamma positive (% VL+)

Row totals

Standard interpretation

Sev. Neg.

Sev. Pos.

Sev. Incon.

Sev. Neg.

Sev. Pos.

Sev. Incon.

 

Neg.

2/20 (10%)

0

19/259 (7%)

3/20 (15%)

0

16/320 (5%)

40/619 (6%)

Pos.

0

2224/4235 (53%)

0

0

0

0

2224/4235 (53%)

Inconclusive

0

69/248 (28%)

138/581 (24%)

0

0

4/15 (27%)

211/844 (21%)

Column totals

2/20 (10%)

2293/4483 (51%)

157/840 (19%)

3/20 (15%)

0

20/335 (6%)

 
  1. The gamma results only relate to animals designated for removal due to the gamma test result only; these data only relate to the cohort of animals where a b-a reading was recorded (n = 5698)