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A model-fitted relationship of the probability of detecting presumptive Campylobacter-positive water samples in each month from four rivers, adjusted for site and river flow. The colored solid line with shading represents the mean probability and 95% confidence interval. “MR Albert” refers to the Albert Street section of the Manawatu River, and “MR Hopelands” refers to the Hopelands Picnic Reserve section of the Manawatu River.
