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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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Duffy, Lesley
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Publications (3/3 displayed)
- 2015Mapping the carriage of flaA-restriction fragment length polymorphism Campylobacter genotypes on poultry carcases through the processing chain and comparison to clinical isolatescitations
- 2015Genomic characterization of atypical enteropathogenic E. coli (aEPEC) strains from Australian cattle
- 2014Quantitative effects of in-line operations on Campylobacter and Escherichia coli through two Australian broiler processing plantscitations
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article
Mapping the carriage of flaA-restriction fragment length polymorphism Campylobacter genotypes on poultry carcases through the processing chain and comparison to clinical isolates
Abstract
Poultry are considered a major source for campylobacteriosis in humans. A total of 1866 Campylobacter spp. isolates collected through the poultry processing chain from four flocks were typed using flaA-restriction fragment length polymorphism to measure the impact of processing on the genotypes present. Temporally related human clinical isolates (n=497) were also typed. Isolates were obtained from chicken carcass rinses obtained from chickens collected before scalding, after scalding, before immersion chilling, after immersion chilling and after packaging as well as from individual caecal samples. A total of 32 genotypes comprising at least four isolates each were recognised. Simpson’s Index of Diversity (D) was calculated for each sampling site within each flock, for each flock as a whole and for the clinical isolates.From caecal collection to after packaging samples the D value did not change in two flocks, decreased in one flock and increased in the fourth flock. Non-caecal related genotypes were isolated from the end of processing in three flocks. Dominant genotypes occurred in each flock but their constitutive percentages changed through processing. There were 23 overlapping genotypes between clinical and chicken isolates. A total of seven of the 30 genotypes isolated from clinical samples were not found in chicken samples. Only two genotypes found in poultry were not isolated from clinical samples. This study suggests that Campylobacter genotypes from the external surface of the chicken may play an important role in the representation of genotypes at the end of processing. This study confirms that poultry are a source of campylobacteriosis in the Australian population although other sources may contribute.