(a) Number of diarrhoea and Giardia-positive cases
(b) Giardia-positive percentage
Figure 2: Month-wise distribution of diarrheal cases and Giardia-positive cases. (a) The total number of stool samples tested per month throughout the study period and the number of Giardia-positive cases recoded for the same period. Note that different y-axis scales have been used for clarity. Trend lines representing the sample distribution and Giardia-positive cases are similar. (b) Percentage of Giardia-positive cases each month. The data show constant deviation and a nonexplanatory trend line.