Members of the family Campylobacteraceae: Campylobacter jejuni, Campylobacter coli

Pitkänen, Tarja; Hänninen, Marja‐Liisa

doi:10.14321/waterpathogens.23

Cited by 7 publications

(6 citation statements)

References 183 publications

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“…Campylobacter infections are recurrently confirmed as the world's leading cause of bacterial gastroenteritis [1]. In the European Union, campylobacteriosis is the most frequently reported food-borne illness, with over 246000 human cases a year [2].…”

Section: Accession Numbersmentioning

confidence: 99%

“…In addition to the major poultryrelated transmission route, numerous other domestic animal and wildlife sources have been identified [3]. The number and diversity of species of the genus Campylobacter transiting through animal and environmental compartments is important [1,4,5], and emphasizes the need to adopt an integrated One-Health approach in Campylobacter epidemiology and risk assessment [6]. Currently, the genus Campylobacter encompasses 31 species, 11 subspecies and three biovars, according to the list of prokaryotic names with standing in nomenclature (LPSN; http://www.bacterio.net/campylobacter.html), accessed on July 30 th , 2019).…”

Section: Accession Numbersmentioning

confidence: 99%

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Campylobacter armoricus sp. nov., a novel member of the Campylobacter lari group isolated from surface water and stools from humans with enteric infection

Boukerb

Penny

Serghine

et al. 2019

International Journal of Systematic and Evolutionary Microbiology

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During a study on the prevalence and diversity of members of the genus Campylobacter in a shellfishharvesting area and its catchment in Brittany, France, six urease-positive isolates of members of the genus Campylobacter were recovered from surface water samples, as well as three isolates from stools of humans displaying enteric infection in the same period. These strains were initially identified as members of the Campylobacter lari group by MALDI-TOF mass spectrometry and placed into a distinct group in the genus Campylobacter, following atpA gene sequence analysis based on whole-genome sequencing data. This taxonomic position was confirmed by phylogenetic analysis of the 16S rRNA, rpoB and hsp60 (groEL) loci, and an analysis of the core genome that provided an improved phylogenetic resolution. The average nucleotide identity between the representative strain CA656T (CCUG 73571T=CIP 111675T) and the type strain of the most closely related species Campylobacter ornithocola WBE38T was 88.5 %. The strains were found to be microaerobic and anaerobic, motile, non-sporeforming, Gram-stain-negative, spiral-shaped bacteria that exhibit catalase, oxidase and urease activities but not nitrate reduction. This study demonstrates clearly that the nine isolates represent a novel species within the C. lari group, for which the name Campylobacter armoricus is proposed. Here, we present phenotypic and morphological features of the nine strains and the description of their genome sequences. Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site. The proposed type strain CA656T has a 1.589 Mbp chromosome with a DNA G+C content of 28.5 mol% and encodes 1588 predicted coding sequences, 38 tRNAs, and 3 rRNA operons.

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Section: Accession Numbersmentioning

confidence: 99%

Section: Accession Numbersmentioning

confidence: 99%

Campylobacter armoricus sp. nov., a novel member of the Campylobacter lari group isolated from surface water and stools from humans with enteric infection

Boukerb

Penny

Serghine

et al. 2019

International Journal of Systematic and Evolutionary Microbiology

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“…Campylobacter spp. are commensals in the gut of a variety of animals, especially poultry; the main infection routes for Campylobacter species are foodborne and fecal–oral transmission ( 9 ). Both T. whipplei and Campylobacter can be found in sewage ( 9 – 11 ).…”

Section: The Studymentioning

confidence: 99%

Tropheryma whipplei in Feces of Patients with Diarrhea in 3 Locations on Different Continents

Feurle¹,

Moos²,

Landt³

et al. 2021

Emerg. Infect. Dis.

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“…are among the most common bacterial intestinal infections 2 . Nevertheless, the numbers of Campylobacter-based intestinal illnesses that occur each year are suspected to be underreported 3 . This underestimation is predictable because most patients can recover with only moderate discomfort and no medical treatment.…”

Section: Introductionmentioning

confidence: 99%

Culture Methods to Determine the Limit of Detection and Survival in Transport Media of <em>Campylobacter Jejuni</em> in Human Fecal Specimens

Buss

Thacker

Santiago

2020

JoVE

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A culture from human stool for diagnosis of Campylobacter-based intestinal illness takes several days, a wait that taxes the fortitude of the physician and the patient. A culture is also prone to false negative results from random loss of viability during specimen handling, overgrowth of other fecal flora, and poor growth of several pathogenic Campylobacter species on traditional media. These problems can confound clinical decisions on patient treatment and have limited the field from answering fundamental questions on Campylobacter growth and infections. We describe a procedure that estimates the lower limit of bacterial numbers that can be detected by a culture and a method for quantifying survival of C. jejuni in media used for transport of this fragile organism. Knowing this information, it becomes possible to set clinically relevant detection thresholds for diagnostic tests and address unstudied issues of whether non-symptomatic colonization is prevalent, if co-infection with other enteric pathogens is common, or if bacterial load correlates with symptoms or serious sequelae. The study also included testing of 1,552 prospectively collected patient diarrheal fecal specimens that were initially classified by conventional culture and further tested by a new enzyme immunoassay. Positive and discrepant specimens were then screened by four molecular methods to assign true-positive or true-negative status. The 5 non-culture methods showed complete agreement on all 48 positive and discrepant specimens, while the culture mis-identified 14 (28%). The specimens that were incorrectly identified by culture included 13 false negative and 1 false positive sample. This basic protocol can be used with multiple Campylobacter spp. and will allow the numbers of Campylobacter bacteria that produce symptoms of gastroenteritis in humans to be determined and for prevalence rates to be updated.

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Members of the family Campylobacteraceae: Campylobacter jejuni, Campylobacter coli

Cited by 7 publications

References 183 publications

Campylobacter armoricus sp. nov., a novel member of the Campylobacter lari group isolated from surface water and stools from humans with enteric infection

Campylobacter armoricus sp. nov., a novel member of the Campylobacter lari group isolated from surface water and stools from humans with enteric infection

Tropheryma whipplei in Feces of Patients with Diarrhea in 3 Locations on Different Continents

Culture Methods to Determine the Limit of Detection and Survival in Transport Media of <em>Campylobacter Jejuni</em> in Human Fecal Specimens

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