Table 2.
Number of infected snails in the different months of collection and after different light exposure periods as monitored by cercarial shedding.
| Number of snails collected | Number of Infected snails | Odds Ratio (95% CI) | |
|---|---|---|---|
| Total Number | 750 | 267 (35.6%) | |
|
| |||
| ∗ Month of Collection | |||
| November 2016 | 150 | 45 (30.0%)c | - |
| December 2016 | 150 | 32 (21.3%)c | 0.63 (0.38 – 1.07) |
| January 2017 | 150 | 65 (43.3%)a | 1.78 (1.11 – 2.87) |
| February 2017 | 150 | 86 (57.3%)b | 3.14 (1.95 – 5.05) |
| March 2017 | 150 | 39 (26.0%)c | 0.82 (0.50 – 1.36) |
|
| |||
| ∗ ∗ Number of Light Exposures | |||
| One | 150 | 44 (29.3%) | - |
| Two | 150 | 55 (36.7%) | 1.40 (0.86 – 2.26) |
| Three | 150 | 55 (36.7%) | 1.40 (0.86 – 2.26) |
| Four | 150 | 56 (37.3%) | 1.44 (0.89 – 2.33) |
| Five | 150 | 57 (38.0%) | 1.48 (0.91 – 2.39) |
∗Each exposure group was composed of a total of 150 snails from 5 months of collection (n=30 snails/exposure/month).
∗∗ Number of light exposures represents the number of times a given batch of snails received a 6-hour light exposure with an average ~1000 lux light intensity. There were no significant differences among the numbers of infected snails in the different treatment groups (p>0.05)
Values with the same letter are not significantly different from each other (p>0.05). Values with different letters are significantly different from each other (p<0.001).