TABLE 4.
Prevalence of L. monocytogenes in waterways in samplings affected and not affected by rain events
| Waterway | Prevalence, %a |
P valueb | |
|---|---|---|---|
| Non-rain | Rain events | ||
| Alisal | 33.1 ± 9.7 | 71.0 ± 19.8 | 0.03 |
| Carr Lake | 37.8 ± 8.9 | 83.3 ± 11.3 | 0.004 |
| Gabilan | 72.2 ± 19.4 | 83.8 ± 11.8 | 0.41 |
| Upper Salinas | 27.8 ± 22.0 | 49.3 ± 39.8 | 0.12 |
| Lower Salinas | 22.2 ± 15.5 | 70.8 ± 29.0 | 0.006 |
| Tembladero | 42.4 ± 11.5 | 87.7 ± 6.9 | 0.003 |
a
Prevalence represents the percentage of total samples positive under the given circumstance.
b
P < 0.05 denotes a significant difference determined by paired t tests.