biostudies-literatureUnknown10(5)Leon AThe present study described the evolution of antimicrobial resistance in equine pathogens isolated from 2016 to 2019. A collection of 7806 bacterial isolates were analysed for their in vitro antimicrobial susceptibility using the disk diffusion method. The most frequently isolated pathogens were group C Streptococci (27.0%), Escherichia coli (18.0%), Staphylococcus aureus (6.2%), Pseudomonas aeruginosa (3.4%), Klebsiella pneumoniae (2.3%) and Enterobacter spp. (2.1%). The majority of these pathogens were isolated from the genital tract (45.1%, n = 3522). With the implementation of two French national plans (named ECOANTIBIO 1 and 2) in 2012-2016 and 2017-2021, respectively, and a reduction in animal exposure to veterinary antibiotics, our study showed decreases in the resistance of group CAnimals : an open access journal from MDPIE812https://www.ebi.ac.uk/biostudies/studies/S-EPMC7278474biostudies-literatureEvolution of In Vitro Antimicrobial Susceptibility of Equine Clinical Isolates in France between 2016 and 2019.PMC7278474Maillard KGiard JCCastagnet SLeon APaillot RfalseEvolution of In Vitro Antimicrobial Susceptibility of Equine Clinical Isolates in France between 2016 and 2019.The present study described the evolution of antimicrobial resistance in equine pathogens isolated from 2016 to 2019. A collection of 7806 bacterial isolates were analysed for their in vitro antimicrobial susceptibility using the disk diffusion method. The most frequently isolated pathogens were group C Streptococci (27.0%), Escherichia coli (18.0%), Staphylococcus aureus (6.2%), Pseudomonas aeruginosa (3.4%), Klebsiella pneumoniae (2.3%) and Enterobacter spp. (2.1%). The majority of these pathogens were isolated from the genital tract (45.1%, n = 3522). With the implementation of two French national plans (named ECOANTIBIO 1 and 2) in 2012-2016 and 2017-2021, respectively, and a reduction in animal exposure to veterinary antibiotics, our study showed decreases in the resistance of group C2020-01-01T00:00:00Z2020 May2025-04-19T22:15:44.213Z2020-06-16T07:21:29ZS-EPMC72784743239289110.3390/ani10050812