Table 1. Distribution of spa-types of MRSA MC398 isolates (n = 430) and MSSA MC398 (n = 54) derived from livestock veterinarians and household members during the one-year study period.
| No. of MRSA MC398 isolates (%) | No. of MSSA MC398 isolates (%) | ||||||
| Spa-type | Total | Veterinarians | Household members | Total | Veterinarians | Household members | P-valuea |
| t011 | 241 (56.0%) | 210 | 31 | 4 (7.4%) | 3 | 1 | <0.001 |
| t108 | 121 (28.1%) | 99 | 22 | 3 (5.6%) | 3 | none | <0.001 |
| t567 | 17 (4.0%) | 12 | 5 | none | none | none | 0.24 |
| t1184 | 14 (3.3%) | 3 | 11 | none | none | none | 0.38 |
| t081 | none | none | none | 11 (20.4%) | 6 | 5 | <0.001 |
| t034 | 9 (2.1%) | 8 | 1 | 31 (57.4%) | 25 | 6 | <0.001 |
| t1456 | 9 (2.1%) | 8 | 1 | none | 0.61 | ||
| t571 | 5 (1.2%) | 5 | none | 2 (3.7%) | 2 | none | 0.18 |
| t1451 | 3 (0.7%) | 2 | 1 | none | none | none | 1.00 |
| t8333 | 3 (0.7%) | 0 | 3 | none | none | none | 1.00 |
| t899 | 2 (0.5%) | 2 | none | none | none | none | 1.00 |
| t3479 | 2 (0.5%) | 2 | none | none | none | none | 1.00 |
| t4652 | none | none | none | 2 (3.7%) | 2 | none | 0.01 |
| t1606, t2287, t4628, t6606 | 1 each (0.2%) | 1 each | none | none | none | none | 1.00 |
| t5902 | none | none | none | 1 (1.9%) | 1 | 0 | 0.11 |
| Total | 430 (100%) | 355 | 75 | 54 (100%) | 42 | 12 | |
a
proportions of MRSA MC398 isolates vs proportions of MSSA MC398 isolates. A p-value ≤0.05 was considered statistically significant.