Table 1.
Tuberculosis (TB) testing history of Herds A and B during 1994 to 2007: number tested and the number and percentage positive
| Year | Season | Herd A | Herd B | ||
|---|---|---|---|---|---|
| No. tested | No. positive.(%) | No. tested | No. positive (%) | ||
| 1994 | Spring | 150 | 20 (13.0) | ||
| Autumn | 206 | 28 (13.6) | |||
| 1995 | Spring | 318 | 74 (22.3) | ||
| Autumn | 426 | 5 (1.2) | |||
| 1996 | Spring | 318 | 5 (1.6) | 178 | 18 (10.1) |
| Autumn | 305 | 3 (1.0) | 115 | 7 (6.0) | |
| 1997 | Spring | 363 | 2 (0.6) | 145 | 0 |
| Autumn | 387 | 0 | nd | ||
| 1998 | Spring | 82 | 0 | 137 | 0 |
| Autumn | nd | nd | |||
| 1999 | Spring | 452 | 0 | 206 | 0 |
| Autumn | 82 | 0 | nd | ||
| 2000 | Spring | 312 | 0 | nd | |
| Autumn | 104 | 0 | nd | ||
| 2001 | Spring | 55 | 0 | nd | |
| Autumn | nd | nd | |||
| 2002 | Spring | 625a | 117 (18.7) | nd | |
| Autumn | 142 | 16 (11.0) | nd | ||
| 2003 | Spring | 399 | 7 (1.8) | 190 | 0 |
| Autumn | 343 | 1(0.3%) | nd | ||
| 2004 | Spring | 389 | 0 | nd | |
| Autumn | 275 | 0 | nd | ||
| 2005 | Spring | 277 | 2 (0.7) | 201 | 0 |
| Autumn | nd | nd | |||
| 2006 | Spring | 336 | 3 (0.9) | nd | |
| Autumn | nd | nd | nd | ||
| 2007 | Spring | 339 | 0 | nd | |
nd = not done
a: This number includes a retest on Group 2 during spring 2002 (Table 2).
In Herd A, severe interpretation of the SICTT results was applied throughout the testing programme, whereas in Herd B, severe interpretation was only applied in 1996/97.