Table 3. Associations between potential snail hosts and infected snails with prevalence and intensity of FZT in fisha.
| Number of ponds | Prevalence in % (Range) | Intensity (Range) | Prevalence: Odds Ratio with 95% CI | Intensity: Count Ratio with 95% CI | |
| Density category of infected snails (snails m−2) | |||||
| 0 (Low) | 34 | 23 (0–94) | 0.19 (0–1.38) | 1 | 1 |
| 0.14–1.07 (Medium) | 8 | 54 (0–88) | 0.55 (0–1.43) | 4.36* (1.65–11.55) | 2.37 (0.85–6.56) |
| >1.07 (High) | 5 | 75 (30–97) | 1.68 (0.28–5.09) | 11.32* (4.46–28.76) | 11.94* (3.89–36.66) |
| Density category of snails (snails m−2) | |||||
| 0 (Low) | 6 | 27 (0–86) | 0.21 (0–0.96) | 1 | 1 |
| 0.14–13.3 (Medium) | 24 | 17 (0–84) | 0.13 (0–1.22) | 0.57 (0.10–3.08) | 2.02 (0.45–8.96) |
| >13.3 (High) | 17 | 60 (0–97) | 0.83 (0–5.09) | 4.01* (0.84–19.16) | 18.41* (4.25–79.65) |
*
Indicates significance (P<0.001).
a
For data on prevalence of FZT in fish results are shown as odds ratios and for intensity of FZT in fish as count ratios. “No infected snails” is set at value 1 and all other ratios are in relation to the “No infected snails”.