Table 3.
Characteristics of 846 Brucella strains isolated from cattle and humans in China.
| Variables |
Host |
||
|---|---|---|---|
| Human (%) | Dairy cattle (%) | Total (%) | |
| Total | 733 (82.5) | 155 (17.5) | 888 |
| Species | |||
| B. abortus | 32 (4.4) | 127 (81.9) | 159 (17.9) |
| B. melitensis | 676 (92.2) | 15 (9.7) | 691 (77.8) |
| B. suis | 25 (3.4) | 13 (8.4) | 38 (4.3) |
| B. abortus biovars | |||
| Biovar 1 | 5 (15.6) | 0 (0.0) | 5 (3.1) |
| Biovar 3 | 25 (78.1) | 109 (85.8) | 134 (84.3) |
| Biovar 6 | 2 (6.3) | 0 (0.0) | 2 (1.3) |
| Unidentified | 0 (0.0) | 18 (14.2) | 18 (11.3) |
| B. melitensis biovars | |||
| Biovar 1 | 118 (17.5) | 2 (13.3) | 120 (17.4) |
| Biovar 2 | 9 (1.3) | 1 (6.7) | 10 (1.4) |
| Biovar 3 | 468 (69.2) | 5 (33.3) | 473 (68.5) |
| Variant | 23 (3.4) | 7 (46.7) | 30 (4.3) |
| Unidentified | 58 (8.6) | 0 (0.0) | 58 (8.4) |
| B. suis | |||
| Biovar 1 | 7 (28.0) | 13 (100.0) | 20 (52.6) |
| Biovar 3 | 17 (68.0) | 0 (0.0) | 17 (44.7) |
| Unidentified | 1 (4.0) | 0 (0.0) | 1 (2.6) |
| Region | |||
| Inner Mongolia | 349 (47.6) | 92 (59.4) | 441 (49.7) |
| Shannxi | 174 (23.7) | 0 (0.0) | 174 (19.6) |
| Other provinces | 168 (28.6) | 63 (40.6) | 231 (30.7) |