<i>Campylobacter</i> species in animal, food, and environmental sources, and relevant testing programs in Canada

Huang, Hongsheng; Brooks, Brian W.; Lowman, Ruff; Carrillo, Catherine D.

doi:10.1139/cjm-2014-0770

Cited by 45 publications

(42 citation statements)

References 121 publications

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“…Gerzova et al (2015) found the 16S rRNA gene of the genus Campylobacter in all six French samples of pig colon contents investigated and in three out of five individual samples of colon contents and one pooled sample from Sweden. Such a high prevalence of Campylobacter in pigs is frequently observed in many countries such as France (Avrain et al, 2004), Great Britain (Milnes et al, 2008), the United States (Tadesse et al, 2011), or Canada (Huang et al, 2015) but slightly lower prevalences have sometimes been reported, as in Japan (Haruna et al, 2013) and in Sweden (Bywater et al, 2004). Levels from 0 to 92.7% were reported for European member and non-member states (EFSA and ECDC, 2015).…”

Section: Discussionmentioning

confidence: 96%

Campylobacter coli in Organic and Conventional Pig Production in France and Sweden: Prevalence and Antimicrobial Resistance

et al. 2017

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The purpose of the study was to evaluate and compare the prevalence and antimicrobial resistance of Campylobacter coli in conventional and organic pigs from France and Sweden. Fecal or colon samples were collected at farms or at slaughterhouses and cultured for Campylobacter. The minimum inhibitory concentrations of ciprofloxacin, nalidixic acid, streptomycin, tetracycline, erythromycin, and gentamicin were determined by microdilution for a total of 263 French strains from 114 pigs from 50 different farms and 82 Swedish strains from 144 pigs from 54 different farms. Erythromycin resistant isolates were examined for presence of the emerging rRNA methylase erm(B) gene. The study showed that within the colon samples obtained in each country there was no significant difference in prevalence of Campylobacter between pigs in organic and conventional productions [France: conventional: 43/58 (74%); organic: 43/56 (77%) and Sweden: conventional: 24/36 (67%); organic: 20/36 (56%)]. In France, but not in Sweden, significant differences of percentages of resistant isolates were associated with production type (tetracycline, erythromycin) and the number of resistances was significantly higher for isolates from conventional pigs. In Sweden, the number of resistances of fecal isolates was significantly higher compared to colon isolates. The erm(B) gene was not detected in the 87 erythromycin resistant strains tested.

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Section: Discussionmentioning

confidence: 96%

Campylobacter coli in Organic and Conventional Pig Production in France and Sweden: Prevalence and Antimicrobial Resistance

et al. 2017

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“…Cultural and dietary differences could influence the relative contribution of sources of foodborne disease in France and the United Kingdom. For example, chicken consumption is higher in the United Kingdom (30 kg/person/year) compared to France (25 kg/person/year) (50), where other known infection sources, including ruminant offal and veal (51)(52)(53)(54), form a greater proportion of the diet. Factors associated with food preparation may also be significant, but analysis of a larger data set of French clinical isolates would be necessary to achieve a more representative description of human C. jejuni contamination routes in France.…”

Section: Fig 4 Assignment To Source Of British and French Human Clinimentioning

confidence: 99%

Genome-Wide Identification of Host-Segregating Epidemiological Markers for Source Attribution in Campylobacter jejuni

Thépault

Méric

Rivoal

et al. 2017

Appl Environ Microbiol

110

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Campylobacter is among the most common worldwide causes of bacterial gastroenteritis. This organism is part of the commensal microbiota of numerous host species, including livestock, and these animals constitute potential sources of human infection. Molecular typing approaches, especially multilocus sequence typing (MLST), have been used to attribute the source of human campylobacteriosis by quantifying the relative abundance of alleles at seven MLST loci among isolates from animal reservoirs and human infection, implicating chicken as a major infection source. The increasing availability of bacterial genomes provides data on allelic variation at loci across the genome, providing the potential to improve the discriminatory power of data for source attribution. Here we present a source attribution approach based on the identification of novel epidemiological markers among a reference pan-genome list of 1,810 genes identified by gene-by-gene comparison of 884 genomes of Campylobacter jejuni isolates from animal reservoirs, the environment, and clinical cases. Fifteen loci involved in metabolic activities, protein modification, signal transduction, and stress response or coding for hypothetical proteins were selected as host-segregating markers and used to attribute the source of 42 French and 281 United Kingdom clinical C. jejuni isolates. Consistent with previous studies of British campylobacteriosis, analyses performed using STRUCTURE software attributed 56.8% of British clinical cases to chicken, emphasizing the importance of this host reservoir as an infection source in the United Kingdom. However, among French clinical isolates, approximately equal proportions of isolates were attributed to chicken and ruminant reservoirs, suggesting possible differences in the relative importance of animal host reservoirs and indicating a benefit for further nationalscale attribution modeling to account for differences in production, behavior, and food consumption.IMPORTANCE Accurately quantifying the relative contribution of different host reservoirs to human Campylobacter infection is an ongoing challenge. This study, based on the development of a novel source attribution approach, provides the first results of source attribution in Campylobacter jejuni in France. A systematic analysis using gene-by-gene comparison of 884 genomes of C. jejuni isolates, with a pan-genome list of genes, identified 15 novel epidemiological markers for source attribution. The different proportions of French and United Kingdom clinical isolates attributed to

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“…The most common reservoirs of Campylobacter spp. are the intestine of many animals such as cattle, sheep, poultry, pets, and wild animals (Huang, Brooks, Lowman, & Carrillo, 2015;Ngulukun, 2017;Silva et al, 2011). Poultry and turkeys are considered as the primary reservoirs of Campylobacter spp.…”

Section: Campylobacter Sppmentioning

confidence: 99%

Main Groups of Microorganisms of Relevance for Food Safety and Stability

Lorenzo

Munekata

Domínguez

et al. 2018

Innovative Technologies for Food Preservation

166

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Campylobacter species in animal, food, and environmental sources, and relevant testing programs in Canada

Cited by 45 publications

References 121 publications

Campylobacter coli in Organic and Conventional Pig Production in France and Sweden: Prevalence and Antimicrobial Resistance

Campylobacter coli in Organic and Conventional Pig Production in France and Sweden: Prevalence and Antimicrobial Resistance

Genome-Wide Identification of Host-Segregating Epidemiological Markers for Source Attribution in Campylobacter jejuni

Main Groups of Microorganisms of Relevance for Food Safety and Stability

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