Repeated disinfectant use in broiler houses and pig nursery units does not affect disinfectant and antibiotic susceptibility in Escherichia coli field isolates.

Logistic regression analysis showed no significant association between the used disinfectants and the antibiotic resistance of the isolates (Supplementary Table 1 ). Antibiotic susceptibility evolution An increasing trend in antibiotic resistance to ampicillin, sulfamethoxazole and trimethoprim was found between sampling t1 and t3 at the broiler pilot farm (Supplementary Fig. 1 a).

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