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Estimated probability of generic E. coli presence determined by multivariable logistic regression in the function of the risk factors, i.e., season, water type (groundwater or rain water), water treatment (untreated or sand filtration), and sample type, showing the presence in irrigation water (≥1 CFU/100 ml) and the sample type with the highest risk (A) and, in strawberries (≥10 CFU/g), the sample type with the lowest risk (B).
