TABLE 2.
Detection of pathogenic mycobacteria in cattle-derived samples
| Sample type (total no. of samples positive by N-PCR and culture) | No. (%) of bovine samples positive for pathogenic mycobacteria byd:
|
|||||||
|---|---|---|---|---|---|---|---|---|
| N-PCR
|
Culturea
|
|||||||
| M. tuberculosis | M. bovis | M. tuberculosis and M. bovisb | Total | Not donec | M. tuberculosis | M. bovis | Total | |
| PSLN (35) | 10 | 15 | 3 | 28 (80.0) | 4 | 2 | 2 | 4 (11.4) |
| Blood (30) | 12 | 12 | 1 | 25 (83.3) | 1 | 5 | 2 | 7 (23.3) |
| Milk (48) | 20 | 19 | 7 | 46 (95.8) | 1 | 3 | 4 | 7 (14.2) |
| Total (113) | 42 (37.1) | 46 (40.7) | 11 (9.7) | 99 (87.6) | 6 | 10 (8.8) | 8 (7.1) | 18 (15.7) |
a
Identification of cultivated mycobacterial isolates by standard tests (CDC, Atlanta, Ga.).
b
M. tuberculosis and M. bovis detected in samples derived from a single animal/in an individual sample.
c
Speciation could not be established by N-PCR but samples were positive for MTC.
d
M. tuberculosis versus M. bovis results were not significant. Results with milk versus PSLN versus blood had a P value of <0.001.