TABLE 1.
Mycobacterium avium subsp. paratuberculosis annual antibody responses and fecal shedding in M. avium subsp. paratuberculosis-infected cattle herds receiving M. avium subsp. paratuberculosis vaccination with management changes (herd A) or without management changes (herd B)
| Herd and yr | No. in herda | No. (%)b |
||||||
|---|---|---|---|---|---|---|---|---|
| Vaccinated | Total |
Vaccinated |
ELISA positive |
|||||
| ELISA positive | Fecal culture positive | ELISA positive | Fecal culture positive | Fecal culture positive | Vaccinated fecal culture positive | |||
| A | ||||||||
| 2004 | 116 | 74 (63.7) | 49 (42.2) | 7 (6) | 47 (63.7) | 0 | 2 | 0 |
| 2005 | 116 | 105 (90.5) | 74 (63.7) | 1 (0.8) | 73 (69.5) | 0 | 0 | 0 |
| 2006 | 115 | 110 (95.6) | 78 (67.8) | 3 (2.4) | 78 (70.9) | 1 (0.9) | 0 | 0 |
| 2007 | 122 | 122 (100) | 40 (32.7) | 2c/3 (2.4) | 40 (32.7) | 2c/3 (2.4) | 2 | 2 |
| 2008 | 125 | 125 (100) | 65 (52.0) | 3c/4 (3.2) | 65 (52) | 3c/4 (3.2) | 2 | 2 |
| 2009 | 128 | 94 (73.4) | 49 (38.2) | 2c/3 (2.3) | 49 (52.2) | 1 (1) | 0 | 0 |
| 2010 | 128 | 66 (51.5) | 35 (27.3) | 1 (0.7) | 34 (51.5) | 0 | 0 | 0 |
| B | ||||||||
| 2004 | 43 | 0 | 3 (6.6) | 10 (23.2) | 0 | 0 | 3 | 0 |
| 2005 | 45 | 2 (4.4) | 7 (15.5) | 8c/11 (24.4) | 2 (100) | 1 (50) | 3 | 1 |
| 2006 | 52 | 30 (57.6) | 30 (57.6) | 8c/11 (21.1) | 25 (83.3) | 4c/5 (16.6) | 9 | 3 |
| 2007 | 61 | 49 (80.3) | 27 (44.2) | 3c/4 (7.2) | 26 (53.0) | 2c/3 (6.1) | 3 | 3 |
| 2008 | 55 | 52 (94.5) | 33 (60) | 3c/5 (9.0) | 32 (61.5) | 3c/4 (7.6) | 4 | 2 |
| 2009 | 52 | 51 (98) | 32 (61.5) | 5c/6 (11.5) | 31 (60.7) | 5c/6 (11.7) | 6 | 4 |
| 2010 | 50 | 49 (98) | 25 (50) | 2 (4.0) | 25 (51.0) | 2 (4.0) | 2 | 1 |
The numbers of animals >24 months of age are indicated for each study year.
Total and vaccinated ELISA- and M. avium subsp. paratuberculosis fecal culture-positive animals are indicated as ELISA positive and fecal culture positive, respectively. Animals that were ELISA positive and were M. avium subsp. paratuberculosis fecal culture positive in the total and vaccinated groups are indicated as fecal culture positive and vaccinated fecal culture positive, respectively, under ELISA positive.
New infections for each year are indicated, showing totals for new infections and total positive results.