Table 2. Distribution of sdr genes from clinical and subclinical isolates of bovine mastitis from different Canadian regions.
| Source of isolates* | No. of isolates | sdrC[No.(%)] | sdrD[No.(%)] | sdrE[No.(%)] | sdrH[No.(%)] |
| CW | 18 | 18(100.0) | 17(94.4) | 15(83.3) | 18(100.0) |
| W | 38 | 38(100.0) | 32(84.2) | 20(52.6) | 37(97.4) |
| CO | 16 | 16(100.0) | 16(100.0) | 15(93.8) | 16(100.0) |
| O | 24 | 24(100.0) | 19(79.2) | 19(79.2) | 22(91.7) |
| CQ | 20 | 20(100.0) | 17(85.0) | 20(100.0) | 20(100.0) |
| Q | 25 | 25(100.0) | 5(20.0) | 19(76.0) | 25(100.0) |
| CE | 30 | 30(100.0) | 22(73.3) | 29(96.7) | 30(100.0) |
| E | 47 | 47(100.0) | 43(91.5) | 46(97.9) | 47(100.0) |
| All Clinical | 84 | 84(100.0) | 72(85.7) | 79(94.0) | 84(100.0) |
| All Subclinical | 134 | 134(100.0) | 99(73.9) | 104(77.6) | 131(97.8) |
*CW, CO, CQ and CE represent clinical isolates from Western Canada, Ontario, Quebec and Eastern Canada, respectively. W, O, Q and E represent subclinical isolates from Western Canada, Ontario, Quebec and Eastern Canada, respectively.