Rachel Duchesne1, Sophie Castagnet1, Karine Maillard2, Sandrine Petry3, Vincent Cattoir4, Jean-Christophe Giard5, Albertine Leon6. 1. LABÉO Frank Duncombe, 14053 Caen, France; Normandie Univ, UNICAEN, U2RM, 14033 Caen, France. 2. LABÉO Frank Duncombe, 14053 Caen, France. 3. ANSES, Dozulé Laboratory for Equine Diseases, Bacteriology Unit, 14430 Goustranville, France. 4. University Hospital of Rennes, Department of Clinical Microbiology, 35033 Rennes, France; National Reference Center for Antimicrobial Resistance (lab Enterococci), 35033 Rennes, France. 5. Normandie Univ, UNICAEN, U2RM, 14033 Caen, France. 6. LABÉO Frank Duncombe, 14053 Caen, France; Normandie Univ, UNICAEN, U2RM, 14033 Caen, France. Electronic address: albertine.leon@laboratoire-labeo.fr.
Abstract
OBJECTIVES: This study aimed to analyse antimicrobial susceptibility evolution of equine pathogens isolated from clinical samples from 2006-2016. METHODS: A collection of 25 813 bacterial isolates was studied, clustered according to their origins (respiratory tract, cutaneous, genital and other), and analysed for their antimicrobial susceptibility using the disk diffusion method. RESULTS: The most frequently isolated pathogens were group C Streptococci (27.6%), Escherichia coli (20.0%), Staphylococcus aureus (7.8%), Pseudomonas aeruginosa (4.0%), Enterobacter spp. (3.4%), Klebsiella pneumoniae (2.4%), and Rhodococcus equi (1.8%). Of the isolates, 9512 were from respiratory samples (36.8%), 7689 from genital origin (29.8%), and 4083 from cutaneous samples (15.8%). Over the 11-year period, the frequency of multidrug-resistant (MDR) strains fluctuated between 6.4-20.4% for group C Streptococci and 17-37.7% for Klebsiella pneumoniae. From 2006-2009, 24.5-43.0% of Staphylococcus aureus isolates were MDR; after 2009 the level did not exceeded 27.6%. For Escherichia coli and Enterobacter spp., these levels were mostly >30.0% until 2012, but significantly decreased thereafter (22.5-26.3%). CONCLUSIONS: This study is the first large-scale analysis of equine pathogens, by the number of samples and duration of study. The results showed high levels of MDR strains and the need to support veterinary antimicrobial stewardship to encourage proper use of antibiotics.
OBJECTIVES: This study aimed to analyse antimicrobial susceptibility evolution of equine pathogens isolated from clinical samples from 2006-2016. METHODS: A collection of 25 813 bacterial isolates was studied, clustered according to their origins (respiratory tract, cutaneous, genital and other), and analysed for their antimicrobial susceptibility using the disk diffusion method. RESULTS: The most frequently isolated pathogens were group C Streptococci (27.6%), Escherichia coli (20.0%), Staphylococcus aureus (7.8%), Pseudomonas aeruginosa (4.0%), Enterobacter spp. (3.4%), Klebsiella pneumoniae (2.4%), and Rhodococcus equi (1.8%). Of the isolates, 9512 were from respiratory samples (36.8%), 7689 from genital origin (29.8%), and 4083 from cutaneous samples (15.8%). Over the 11-year period, the frequency of multidrug-resistant (MDR) strains fluctuated between 6.4-20.4% for group C Streptococci and 17-37.7% for Klebsiella pneumoniae. From 2006-2009, 24.5-43.0% of Staphylococcus aureus isolates were MDR; after 2009 the level did not exceeded 27.6%. For Escherichia coli and Enterobacter spp., these levels were mostly >30.0% until 2012, but significantly decreased thereafter (22.5-26.3%). CONCLUSIONS: This study is the first large-scale analysis of equine pathogens, by the number of samples and duration of study. The results showed high levels of MDR strains and the need to support veterinary antimicrobial stewardship to encourage proper use of antibiotics.
Authors: Søren Saxmose Nielsen; Dominique Joseph Bicout; Paolo Calistri; Elisabetta Canali; Julian Ashley Drewe; Bruno Garin-Bastuji; Jose Luis Gonzales Rojas; Christian Gortazar Schmidt; Mette Herskin; Virginie Michel; Miguel Angel Miranda Chueca; Barbara Padalino; Paolo Pasquali; Helen Clare Roberts; Liisa Helena Sihvonen; Hans Spoolder; Karl Stahl; Antonio Velarde; Arvo Viltrop; Christoph Winckler; Jeroen Dewulf; Luca Guardabassi; Friederike Hilbert; Rodolphe Mader; Francesca Baldinelli; Julio Alvarez Journal: EFSA J Date: 2021-12-24
Authors: Sonsiray Álvarez-Narváez; Laura Huber; Steeve Giguère; Kelsey A Hart; Roy D Berghaus; Susan Sanchez; Noah D Cohen Journal: Microbiol Mol Biol Rev Date: 2021-04-14 Impact factor: 11.056
Authors: Søren Saxmose Nielsen; Dominique Joseph Bicout; Paolo Calistri; Elisabetta Canali; Julian Ashley Drewe; Bruno Garin-Bastuji; José Luis Gonzales Rojas; Christian Gortázar; Mette Herskin; Virginie Michel; Miguel Ángel Miranda Chueca; Barbara Padalino; Paolo Pasquali; Helen Clare Roberts; Hans Spoolder; Karl Ståhl; Antonio Velarde; Arvo Viltrop; Christoph Winckler; Francesca Baldinelli; Alessandro Broglia; Lisa Kohnle; Julio Alvarez Journal: EFSA J Date: 2022-02-02