Season | Water | No. of samples | Number of | Serogroup |
---|---|---|---|---|
 | sources | analyzed | isolates (%) | O1 (%) |
Dry | Stream | 8 | 6 (31.6) | 3 (50) |
Tap | 17 | 0 (0.0) | 0 (0.0) | |
Well | 95 | 13 (68.4) | 3 (23.1) | |
Total | 120 | 19 (100.0) | 6 (31.6) | |
Rainy | Stream | 15 | 11 (22.5) | 5 (45.5) |
Tap | 9 | 1 (2.0) | 0 (0.0) | |
Well | 156 | 37 (75.5) | 14 (37.8) | |
Total | 180 | 49 (100) | 19 (38.8) |