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Yersinia enterocolitica in a Brazilian pork production chain: Tracking of contamination routes, virulence and antimicrobial resistance.

Abstract：

:This study aimed to track Yersinia enterocolitica contamination in a pork production chain in Minas Gerais, Brazil, and to characterize the virulence and antibiotic resistance of isolates. Samples were collected from four different steps of the pork production chain (pig farm, carcass, processing environment and end product; n = 870), and tested for the presence of Y. enterocolitica. The pathogen was detected in 8 samples (palatine tonsils = 5; mesenteric lymph nodes = 2; carcass after bleeding = 1), from which 16 isolates were obtained and identified as Y. enterocolitica bioserotype 4/O:3. XbaI macrorestriction allowed the clustering of isolates in 5 pulsetypes, and the identification of identical profiles of Y. enterocolitca isolated from different samples. All isolates were positive for the virulence related genes ail, virF, myfA, ystA, tccC, ymoA, hreP and sat, and negative for ystB, ystC, fepA, fepD and fes. Considering 17 antibiotics from 11 classes, only ciprofloxacin and kanamycin were effective against all isolates, and three multidrug resistance profiles were identified among them, with simultaneous resistance to 9 of 11 classes. All isolates presented positive results for emrD, yfhD and marC, related to multidrug resistance. The results of this study demonstrated the contamination routes of Y. enterocolitica within the assessed pork production chain, and highlighted the pathogenic potential and antibiotic resistance of this foodborne pathogen.

journal_name

Int J Food Microbiol

journal_title

International journal of food microbiology

authors

Martins BTF,Botelho CV,Silva DAL,Lanna FGPA,Grossi JL,Campos-Galvão MEM,Yamatogi RS,Falcão JP,Bersot LDS,Nero LA

doi

10.1016/j.ijfoodmicro.2018.03.028

subject

Has Abstract

pub_date

2018-07-02 00:00:00

pages

5-9

eissn

0168-1605

issn

1879-3460

pii

S0168-1605(18)30141-7

journal_volume

276

pub_type

杂志文章

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