Avian Reservoirs and Zoonotic Potential of theEmerging Human Pathogen
            <i>Helicobactercanadensis</i>

Waldenström, Jonas; On, Stephen L. W.; Ottvall, Richard; Hasselquist, Dennis; Harrington, Clare S.; Olsén, Björn

doi:10.1128/aem.69.12.7523-7526.2003

Cited by 50 publications

(56 citation statements)

References 22 publications

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“…Other enterohepatic helicobacters, including H. cinaedi, H. hepatitis, H. bilis, and H. canis, have been isolated from diseased livers of several mammalian species (11). Furthermore, H. canadensis, originally misclassified as H. pullorum, is associated with diarrhea and bacteremia in humans and was recently isolated from the feces of geese inhabiting coastal areas in Europe (12,21,23). The isolation of novel helicobacters from the feces of geese collected from the grounds of public parks may pose a similar zoonotic risk, as well as possibly infecting other species of birds and mammals.…”

Section: Discussionmentioning

confidence: 99%

“…Soon thereafter, H. pullorum was isolated from the intestinal tracts of chickens, diseased chicken livers, and diarrheic humans (20). Most recently, H. canadensis, first isolated from diarrheic and bacteremic patients, was cultured from the feces of Barnacle geese (Branta leucopsis) and Canada geese (Branta canadensis) on the Atlantic coast of Europe (12,(21)(22)(23).…”

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confidence: 99%

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Helicobacter anseris sp. nov. and Helicobacter brantae sp. nov., Isolated from Feces of Resident Canada Geese in the Greater Boston Area

Fox

Taylor

Howe

et al. 2006

Appl Environ Microbiol

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Numbers of nonmigratory Canada geese have increased substantially in the past decade, and they have become a nuisance in some urban areas. Because of their close contact with humans in parks and areas adjacent to surface waterways, contact with their feces poses a zoonotic risk. A total of 97 geese from 10 separate geographic locales in the greater Boston area had their feces sampled for detection of Helicobacter spp. Identification of Helicobacter spp. based on 16S rRNA genus-specific helicobacter primers was noted in 39 of 97 (40.2%) DNA fecal extracts. Twenty-seven (27.8%) of these geese had helicobacters isolated from their feces. A urease-positive novel species, Helicobacter anseris, based on phenotypic, biochemical, and 16S rRNA analyses, was isolated from 20 geese from seven different flocks. A second, novel, urease-negative Helicobacter sp., H. brantae, was identified in seven geese. Four geese had both novel Helicobacter spp. cultured from their feces. Whether these two novel helicobacters pose a zoonotic risk, similar to other enteric helicobacters (e.g., H. canadensis, previously isolated from diarrheic and bacteremic humans and from geese in Europe), will require further studies.The genus Helicobacter comprises a group of gram-negative, microaerophilic, spiral to curve-shaped bacteria originally isolated from the stomachs of humans and other mammals (11). The type species of the genus, Helicobacter pylori, causes chronic gastritis and peptic ulcer disease in humans and has more recently been linked to the development of gastric adenocarcinoma and gastric mucosa-associated lymphoma (3, 4, 7). Since H. pylori was first isolated in 1982, an additional 26 formally named Helicobacter spp. have been characterized. These have been cultured from a variety of hosts, most commonly the gastrointestinal tracts of mammals (11).Wild birds have been recognized for decades as reservoirs of Campylobacter spp. (8,17,22). However, it was not until H. pametensis was isolated from wild birds and named in 1994 that avian species were recognized as reservoirs of enteric helicobacters (6,19). Helicobacter pametensis was also isolated from the feces of a pig. Other helicobacters not formally named but referred to as "helicobacter bird B" and "helicobacter bird C" were also cultured from the feces of wild birds living on the coast of Massachusetts (6). Soon thereafter, H. pullorum was isolated from the intestinal tracts of chickens, diseased chicken livers, and diarrheic humans (20). Most recently, H. canadensis, first isolated from diarrheic and bacteremic patients, was cultured from the feces of Barnacle geese (Branta leucopsis) and Canada geese (Branta canadensis) on the Atlantic coast of Europe (12, 21-23).Because H. canadensis was originally identified in humans and subsequently found in geese, we wanted to ascertain whether this helicobacter would also be isolated from Canada geese which frequent public waterways, parks, and golf courses (2, 8, 9). Their feces heavily contaminate those areas and could serve as a zoonoti...

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Helicobacter anseris sp. nov. and Helicobacter brantae sp. nov., Isolated from Feces of Resident Canada Geese in the Greater Boston Area

Fox

Taylor

Howe

et al. 2006

Appl Environ Microbiol

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“…The severity of infection is usually controlled by strict sanitation and biosecurity measures as well as by vaccination (Rimler & Glisson, 1997). Environmental contamination during climate events, from diseased poultry or birds, is a primary source of infection and high concentrations of P. multocida have been found in several avian cholera outbreak related mortality events (Pearson, 2001;Waldenström et al, 2003). Thus, in the present study, we aimed to investigate the effect of climate variation on the incidence of avian cholera.…”

Section: Discussionmentioning

confidence: 99%

Climate Variability and Avian Cholera Transmission in Guangxi, China

Qin

et al. 2017

Rev. Bras. Cienc. Avic.

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In recent years, Guangxi has become one of the most severely affected provinces by epidemics of avian cholera in China. To date, the major determinant climatic factors of the disease in the region have remained largely unknown, making it difficult to effectively target countermeasures for avian cholera surveillance and control. This study aimed to quantify the relationship between climatic variables and cases of avian cholera in subtropical areas of China. Data relating to local meteorological variables and notified cases of avian cholera were supplied by the relevant authorities between January 2006 and December 2015. Spearman correlation, co-linearity statistics and crosscorrelation analysis were applied to the data, controlling for co-linearity and lag effects. A time-series Poisson regression analysis was conducted to examine the degree of correlation between the climate variables and avian cholera transmission. The results indicated that monthly mean temperature, relative humidity, rainfall and the multivariate El Niño Southern Oscillation Index, with 2-3 months lag, were correlated with avian cholera incidence. The final model had good predictive ability for the occurrence of avian cholera. Overall, the findings indicate that climate variability plays an important role in avian cholera transmission in Guangxi province. Adoption of the model presented in this study could usefully inform avian cholera surveillance strategies, making them significantly simpler and more effective. The model could also serve as a decision support tool for veterinary professionals and health authorities.

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“…Wild geese have been identified as a reservoir in Europe (12,13), while in China, the organism has been isolated from the feces of wild rodents (5). H. canadensis has also been isolated from laboratory rabbits (11) and from Guinea fowl in France (8).…”

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confidence: 99%