The significance of<i>campylobacter jejuni</i>infection in poultry: A review

Shane, S. M.

doi:10.1080/03079459208418836

Cited by 114 publications

(76 citation statements)

References 141 publications

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“…jejuni appears to be non-pathogenic in chickens, even though chicken caeca can be highly colonized (Stern et al, 1988;Shane, 1992). The bacterial factors involved in the colonization of the avian caeca are unknown.…”

Section: Discussionmentioning

confidence: 99%

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Colonization of chicks by motility mutants of Campylobacter jejuni demonstrates the importance of flagellin A expression

Wassenaar

Zeijst

Ayling³

et al. 1993

Journal of General Microbiology

228

214

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Campylobacter jejuni strain 81 116 contains two flagellin genes, flaA and JlaB. Wild-type (WT) bacteria express JlaA only, but JlaB can be expressed under certain conditions. We have determined the importance of flagella for colonization of the avian caecum, which appears to be the natural environment for these bacteria. Mutants in which JlaA orJlaB, or both had been inactivated, and motility variants, were investigated. Flagella are not a requisite for colonization, but mutants lacking both flagellin genes colonized less efficiently than WT. Inactivation of the JlaB gene, which had no effect on bacterial motility, enhanced chicken caecal colonization 1000-fold compared to WT. A variant (SF-1) with flagella composed of flagellin A, but with poor motility, also colonized better than WT. Conversely, mutants with an inactivatedJEaA gene colonized 100-to 1000-fold less efficiently than WT, regardless of their motility conferred by truncated or full-length flagellin B flagella. These results suggest that the presence of flagellin A, rather than motility, is essential for optimal bacterial colonization of chicken caeca.

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Section: Discussionmentioning

confidence: 99%

“…In contrast, the organism is a commensal of poultry, from which it enters the human food chain (Harris et al, 1986;Stern et al, 1988;Shane, 1992). In order to reduce the prevalence of C. jejuni in chickens, and thus decrease the risk of human infection, a better understanding of the factors involved in avian colonization is needed.…”

Section: Introductionmentioning

confidence: 99%

Colonization of chicks by motility mutants of Campylobacter jejuni demonstrates the importance of flagellin A expression

Wassenaar

Zeijst

Ayling³

et al. 1993

Journal of General Microbiology

228

214

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“…Unfortunately, the epidemiology of campylobacter colonization in poultry is not yet fully understood. Feed, water, domestic animals, insects, rodents and wild birds have all been suggested as possible sources of horizontal transmission [2,8,9]. Vertical transmission from campylobacter-positive breeder flocks via the egg to their progeny, has not been found to be very likely [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Epidemiology ofCampylobacterspp. at two Dutch broiler farms

Jacobs-Reitsma¹,

Giessen

Bolder³

et al. 1995

Epidemiol. Infect.

230

191

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SUMMARYBroiler flocks on two Dutch poultry farms were screened weekly for the presence of campylobacter in fresh caecal droppings during eight consecutive production cycles. Hatchery and fresh litter samples were taken at the start of each new cycle. Water, feed, insects, and faeces of domestic animals, present on the farms were also included in the sampling. Penner serotyping of isolates was used to identify epidemiological factors that contribute to campylobacter colonization in the broiler flocks. Generally, broiler flocks became colonized with campylobacter at about 3-4 weeks of age with isolation percentages of 100 %, and stayed colonized up to slaughter. A similar pattern of serotypes was found within the various broiler houses on one farm during one production cycle. New flocks generally showed also a new pattern of serotypes. Most serotypes isolated from the laying hens, pigs, sheep and cattle were different from those isolated from the broilers at the same time. Campylobacter serotypes from darkling beetles inside the broiler houses were identical to the ones isolated from the broilers. No campylobacter was isolated from any of the hatchery, water, feed or fresh litter samples. Conclusive evidence of transmission routes was not found, but results certainly point towards horizontal transmission from the environment. Horizontal transmission from one broiler flock to the next one via a persistent contamination within the broiler house, as well as vertical transmission from breeder flocks via the hatchery to progeny, did not seem to be very likely.

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“…Most cases are sporadic and a variety of vehicles is thought to be responsible for infection. The most important is probably contaminated chicken meat [1]. Relatively few outbreaks are reported and, where vehicles have been identified, contaminated water and unpasteurized milk [2][3][4][5] are often implicated.…”

Section: Introductionmentioning

confidence: 99%

A point source outbreak of campylobacter infection related to bird-pecked milk

1993

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SUMMARYA point source outbreak of Carnpylobacter jejuni affected 11 children in a day nursery. Milk consumed by the children was known to have been pecked by magpies on occasions. Illness was significantly associated with consumption of milk on a single morning. Examination of milk from a bottle pecked after the outbreak yielded campylobacters. The level of contamination was approximately six cells of C. jejuni per 500 ml of milk.

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The significance ofcampylobacter jejuniinfection in poultry: A review

Cited by 114 publications

References 141 publications

Colonization of chicks by motility mutants of Campylobacter jejuni demonstrates the importance of flagellin A expression

Colonization of chicks by motility mutants of Campylobacter jejuni demonstrates the importance of flagellin A expression

Epidemiology ofCampylobacterspp. at two Dutch broiler farms

A point source outbreak of campylobacter infection related to bird-pecked milk

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