Fachbereich Veterinärmedizin



    Spread and persistence of VIM-1 Carbapenemase-producing Enterobacteriaceae in three German swine farms in 2011 and 2012 (2017)

    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Fischer, Jennie
    San José, Mateo
    Roschanski, Nicole (WE 10)
    Schmoger, Silvia
    Baumann, Beatrice
    Irrgang, Alexandra
    Friese, Anika (WE 10)
    Roesler, Uwe (WE 10)
    Helmuth, Reiner
    Guerra, Beatriz
    Veterinary Microbiology; 200 — S. 118–123
    ISSN: 0378-1135
    DOI: 10.1016/j.vetmic.2016.04.026
    Pubmed: 27234907
    Institut für Tier- und Umwelthygiene

    Robert-von-Ostertag-Str. 7-13
    Gebäude 35
    14169 Berlin
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    Abstract / Zusammenfassung

    The occurrence of carbapenemase-producing Enterobacteriaceae in livestock is considered as a threat for public health. In Germany, VIM-1-producing Escherichia (E.) coli sequence type (ST) 88 and Salmonella Infantis isolates harbouring blaVIM-1IncHI2 plasmids have been isolated from swine and poultry farms. A retrospective study was performed to determine if there was a broader distribution of VIM-1-positive isolates in any of the carbapenemase-positive swine farms. Selective incubation (carbapenem-containing broth) of 249 conserved cultures collected in three farms (2011-2012), allowed the detection of 40 blaVIM-1-positive isolates. Apart from the already known non-motile Salmonella Infantis isolate R25 (farm S1) and R27 (S2), a third isolate was recovered from farm S3. For E. coli, additional to isolates R29 and R178 (S2), 35 new isolates were identified in the same farm during all the sampling periods (three dates, 2011) and in samples from different animals, farm environment, manure and flies. The newly identified E. coli and Salmonella isolates showed similar genetic and phenotypic characteristics (XbaI-PFGE profiles, antimicrobial resistance patterns, plasmid content, phylogroups, antigenic formula) to those in the previously described strains, suggesting microevolution within the clonal lines within one fattening period. The study shows that persistence of carbapenemase-producing clonal lines in livestock farms is possible, and underlines the need for harmonised monitoring and surveillance studies to follow up the occurrence of such bacteria in European livestock.