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Distribution of phenotype ESBL (
), AmpC (
), ESBL+AmpC (
), or other (
) in Escherichia coli isolated from calves, cow and manure pits from 101 dairy farms from Québec Province, Canada. (A) Distribution of phenotypes by sampling seasons (B) Distribution of phenotypes by origin of sampling. *p < 0.05 Poisson distribution with Tukey-kramer correction for multiple comparison.
