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avian bornavirus in free-ranging waterfowl: prevalence of antibodies and cloacal shedding of viral rna.we surveyed free-ranging canada geese (branta canadensis), trumpeter swans (cygnus buccinator), mute swans (cygnus olor), and mallards (anas platyrhynchos) to estimate the prevalence of antibodies to avian bornavirus (abv) and of cloacal shedding of abv rna in southern ontario, canada. blood samples and cloacal swabs were collected from 206 free-ranging canada geese, 135 trumpeter swans, 75 mute swans, and 208 mallards at 10 main capture sites between october 2010 and may 2012. sera were assesse ...201424779463
investigation into the possibility of vertical transmission of avian bornavirus in free-ranging canada geese (branta canadensis).to investigate the possibility of in ovo infection with avian bornavirus (abv) in wild canada geese (branta canadensis), 53 eggs were opportunistically collected at various stages of embryonic development from 16 free-ranging goose nests at a large urban zoo site where abv infection is known to be present in this species. abv rna was detected in the yolk of one of three unembryonated eggs using real-time reverse transcription polymerase chain reaction. abv rna was not identified in the brains fr ...201424801979
complete genome sequence of an avian bornavirus isolated from a healthy canadian goose (branta canadensis).a recent survey among wild birds demonstrated the presence of a unique genotype of avian bornavirus (abv) in wild geese and swans in north america. here, we report the first complete genome sequence of an avian bornavirus of the goose genotype.201324158553
pathology and diagnosis of avian bornavirus infection in wild canada geese (branta canadensis), trumpeter swans (cygnus buccinator) and mute swans (cygnus olor) in canada: a retrospective study.nine hundred and fifty-five pathology cases collected in ontario between 1992 and 2011 from wild free-ranging canada geese, trumpeter swans and mute swans were retrospectively evaluated for the pathology associated with avian bornavirus (abv) infection. cases were selected based on the presence of upper gastrointestinal impaction, central nervous system histopathology or clinical history suggestive of abv infection. the proportion of birds meeting at least one of these criteria was significantly ...201323581438
aquatic bird bornavirus 1 infection in a captive emu (dromaius novaehollandiae): presumed natural transmission from free-ranging wild waterfowl.an adult female emu (dromaius novaehollandiae) presented with anorexia, maldigestion, weight loss, and various subtle nervous deficits. after four months of unrewarding diagnostics, treatments, and supportive care, the emu was euthanized due to lack of clinical improvement and progressive weight loss. gross pathology revealed a very narrow pylorus and multiple flaccid diverticula of the small intestines. histopathological findings included severe lymphoplasmacytic encephalomyelitis and multifoca ...201728862888
characterization of a new genotype of avian bornavirus from wild ducks.avian bornaviruses (abv) are a recently described group of intranuclear negative-stranded rna viruses (order mononegavirales, family bornaviridae). at least 13 different abv genotypes have been described. one genotype, the canada goose genotype (abv-cg), has been isolated from geese and swans and is widely distributed across north america.201425408146
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