Table 4.
Comparison of the abundance of V. cholerae O1/O139 and physico-chemical parameters in ponds located in flood-protected and non-protected areas.
| Flood-protected | Non-flood-protected | WRST P value | |
|---|---|---|---|
| O1 conc. (cells/ml) | 5022 (0−28420) | 309·17 (0−5837) | <0·001 |
| O139 conc. (cells/ml) | 870 (215−16330) | 95 (0−5765) | <0·001 |
| Water temperature (°C) | 28·55 (27·1−30·7) | 29·4 (28·4−31·8) | 0·83 |
| Salinity (g/l) | 0·134 (0−0·2) | 0·063 (0−0·2) | 0·36 |
| TDS (mg/l) | 111·2 (25·8−240) | 62·9 (0−225) | 0·05 |
| pH | 6·85 (6·69−7·01) | 6·98 (6·60−7·08) | 0·63 |
WRST, Wilcoxon rank-sum test; TDS, total dissolved solid.
Values given are median values with the minimum and the maximum observed values for each variable within parentheses. P values refer to the significance of a WRST that compares variables recorded in flood-protected and non-protected areas.