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Molecular epidemiology, virulence determinants and antimicrobial resistance of Campylobacter spreading in retail chicken meat in Central China

Overview of attention for article published in Gut Pathogens, October 2016
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Title
Molecular epidemiology, virulence determinants and antimicrobial resistance of Campylobacter spreading in retail chicken meat in Central China
Published in
Gut Pathogens, October 2016
DOI 10.1186/s13099-016-0132-2
Pubmed ID
Authors

Tengfei Zhang, Qingping Luo, Yiluo Chen, Tingting Li, Guoyuan Wen, Rongrong Zhang, Ling Luo, Qin Lu, Diyun Ai, Hongcai Wang, Huabin Shao

Abstract

Campylobacter species are the major food-borne pathogens which could cause bacterial gastroenteritis in humans. Contaminated chicken products have been recognized as the primary vehicles of Campylobacter transmission to human beings. In this study, the prevalence of Campylobacter in retail chicken meat in Central China was investigated, and the isolates were further characterized using molecular approaches and tested for antibiotic resistance. A total of 302 chicken samples purchased from April 2014 to April 2015 were tested. The level of Campylobacter contamination was enumerated by most probable number-PCR (MPN-PCR). The Campylobacter positive rate was 17.2% (52/302), with bacterial count varying from 3.6 to 360 MPN/g in positive samples. A total of 52 Campylobacter strains, including 40 Campylobacter jejuni and 12 Campylobacter coli, were isolated from the positive samples. To examine the genetic diversity of the isolates, multilocus sequence typing (MLST) technology was applied, which identified 23 sequence types (STs) belonging to seven clonal complexes (CCs) and unassigned. Among them, the dominant CCs of C. jejuni included CC-353 and CC-464, and the dominant CCs of C. coli were CC-828 and CC-1150. Antibiotic resistance analysis showed that all of the isolates were resistant to norfloxacin and ciprofloxacin. 23 virulence-associated genes were tested in the isolates, which showed that the number of virulence-associated genes detected in the C. jejuni isolates ranged from 16 to 21, while in most of the C. coli isolates ranged from 12 to 16. Virulence-associated genes, flaA, flgB, flgE2, fliM, fliY and cadF were detected in all isolates. VirB11, however, was not detected in any of the isolates. To the best of our knowledge, this is the first report on the contamination level and molecular biological features of Campylobacter strains in retail chicken meat in Central China, which showed high genetic diversity and remarkable antibiotic resistance. This study provided scientific data for the risk assessment and evaluation of Campylobacter contamination in retail chicken products.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 50 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 50 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 11 22%
Student > Master 8 16%
Student > Bachelor 7 14%
Student > Ph. D. Student 5 10%
Student > Doctoral Student 3 6%
Other 5 10%
Unknown 11 22%
Readers by discipline Count As %
Agricultural and Biological Sciences 9 18%
Biochemistry, Genetics and Molecular Biology 6 12%
Immunology and Microbiology 5 10%
Veterinary Science and Veterinary Medicine 5 10%
Nursing and Health Professions 3 6%
Other 7 14%
Unknown 15 30%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 14 November 2016.
All research outputs
#6,573,844
of 8,629,768 outputs
Outputs from Gut Pathogens
#166
of 231 outputs
Outputs of similar age
#167,194
of 240,762 outputs
Outputs of similar age from Gut Pathogens
#9
of 15 outputs
Altmetric has tracked 8,629,768 research outputs across all sources so far. This one is in the 13th percentile – i.e., 13% of other outputs scored the same or lower than it.
So far Altmetric has tracked 231 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 7.9. This one is in the 11th percentile – i.e., 11% of its peers scored the same or lower than it.
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We're also able to compare this research output to 15 others from the same source and published within six weeks on either side of this one. This one is in the 6th percentile – i.e., 6% of its contemporaries scored the same or lower than it.