Fig. 3From: Antimicrobial use policy change in pre-weaned dairy calves and its impact on antimicrobial resistance in commensal Escherichia coli: a cross sectional and ecological studyTrends in the proportion of isolates that are resistant to 12 antimicrobials over time. AMP: ampicillin; CHL: chloramphenicol; CIP: ciprofloxacin; NAL: nalidixic acid; AN: amikacin; GEN: gentamicin; KAN: kanamycin; STR: streptomycin; SXT: trimethoprim/sulfamethoxazole; SUL: sulfisoxazole; TET: tetracycline; XNL: ceftiofur. *Trend is statistically significantBack to article page