Table 1.
Prevalence of STEC O157 and non-O157 STEC in watersheds.
| Watershed | Prevalence ± SD1 | |
|---|---|---|
| O157 | Non-O157 STEC | |
| All | 8 ± 13% | 11 ± 7% |
| Gabilan | 22 ± 11%a2 | 19 ± 5%a |
| Salinas River | 5 ± 5%b | 16 ± 10%a |
| Upper Salinas | 7 ± 5%b | 23 ± 6%a |
| Lower Salinas | 2 ± 2%b | 6 ± 5%b |
| Tembladero | 9 ± 7%b | 3 ± 3%b |
| Alisal Creek | 7 ± 8%b | 22 ± 14%a |
| Carr Lake | 6 ± 3%b | 5 ± 3%b |
| P | 0.005 | 0.019 |
1
SD, standard deviation.
2
Lower case letters indicate statistical groupings within a column (for the different watersheds only). Shared letters indicate no statistical difference.