7th International Conference of the European College of Veterinary Microbiology (ECVM)

Session

AMR - genetic basis

11 Sept 2025, 16:00

Conveners

AMR - genetic basis

• Stefan Schwarz (Freie Universität Berlin)
• Marleen Van der Most (Wageningen University & Research)

23. A novel macrolide-lincosamide resistance gene in Actinomyces bowdenii isolated from an abscess in a dog

Sonja Kittl (Institute of Veterinary Bacteriology, University of Bern, Switzerland)

11/09/2025, 16:00

Antimictobial Resistance

Oral presentation

Acquired resistance in actinomycetes infecting companion animals is rare. Usually β-lactams, tetracyclines and clindamycin are considered for treatment. There are however studies about human isolates reporting acquired resistance, especially against clindamycin.
Over the last five years three out of 98 actinomycetes isolated from dogs and cats in our diagnostic laboratory were resistant to...

96. Genetic basis of antimicrobial resistance in Pasteurellaceae of diseased cattle and pigs from Germany

Henrike Krüger-Haker (Institute of Microbiology and Epizootics, School of Veterinary Medicine, Freie Universität Berlin, Germany)

11/09/2025, 16:15

Antimictobial Resistance

Oral presentation

This study investigated the genetic basis of macrolide resistance and further antimicrobial resistance (AMR) properties in Mannheimia haemolytica and Pasteurella multocida from diseased cattle and pigs. Seventeen macrolide-resistant isolates from respiratory diseases included in GERM-Vet (M. haemolytica, cattle, 2008-2020, n=13/780; P. multocida, pigs, 2008-2021, n=4/1115) and eight...

111. Antimicrobial resistance profile and mobilome of *Klebsiella pneumoniae* isolates from the reproductive tract of mares and stallions

Dr Amin Kawarizadeh (The Centre for Equine Infectious Disease, Melbourne Veterinary School, Faculty of Science, University of Melbourne)

11/09/2025, 16:30

Antimictobial Resistance

Oral presentation

Klebsiella pneumoniae is associated with reproductive infections in both mares and stallions, and has great potential for acquiring antimicrobial resistance genes.
Reproductive samples collected from thoroughbred horses in Australia were cultured (2020 and 2022 [inclusive]). Conventional laboratory methods (colony morphology, biochemical, motility tests) were used to presumptively identify...