Molecular characterization of avian rotaviruses circulating in Italian poultry flocks

Falcone, E.; Busi, Chiara; Llombart‐Bosch, Antonio; Monini, Marina; Bertoletti, Marco; Canelli, Elena; Vignolo, E.; Ruggeri, Franco Maria; Boniotti, Maria Beatrice

doi:10.1080/03079457.2015.1096011

Cited by 12 publications

(9 citation statements)

References 33 publications

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“…The complete genome of rotavirus F has only been molecularly characterised from chickens 18 , although partial sequences of the same have been detected and characterised from a pig (unpublished) and partridge 47 . The current study is the first to detect and characterise rotavirus F from a duck species, albeit only a partial segment being identified.…”

Section: Discussionmentioning

confidence: 99%

Metagenomic characterisation of additional and novel avian viruses from Australian wild ducks

Vibin

Chamings

Klaassen

et al. 2020

Sci Rep

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Birds, notably wild ducks, are reservoirs of pathogenic and zoonotic viruses such as influenza viruses and coronaviruses. In the current study, we used metagenomics to detect and characterise avian DNA and RNA viruses from wild Pacific black ducks, Chestnut teals and Grey teals collected at different time points from a single location. We characterised a likely new species of duck aviadenovirus and a novel duck gyrovirus. We also report what, to the best of our knowledge, is the first finding of an avian orthoreovirus from Pacific black ducks and a rotavirus F from Chestnut teals. Other viruses characterised from the samples from these wild ducks belong to the virus families Astroviridae, Caliciviridae and Coronaviridae. Some of the viruses may have potential cross-species transmissibility, while others indicated a wide genetic diversity of duck viruses within a genus. The study also showed evidence of potential transmission of viruses along the East Asian—Australasian Flyway; potentially facilitated by migrating shorebirds. The detection and characterisation of several avian viruses not previously described, and causing asymptomatic but potentially also symptomatic infections suggest the need for more virus surveillance studies for pathogenic and potential zoonotic viruses in wildlife reservoirs.

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Section: Discussionmentioning

confidence: 99%

Metagenomic characterisation of additional and novel avian viruses from Australian wild ducks

Vibin

Chamings

Klaassen

et al. 2020

Sci Rep

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“…RVG was first identified in broiler chicks with runting and stunting syndrome [ 22 ] while its role in these diseases remains to be clarified [ 25 ]. RVG has consistently been reported from South Africa, Germany and Italy [ 24, 26 ] in association with diarrhoea, growth depression and enteric diseases. While data on RVG are accumulating, the diversity of avian RVG, its infection status of in avian flocks and its role in avian disease require further investigation.…”

mentioning

confidence: 87%

“…RVG was first identified in a chicken from Northern Ireland [ 18 ] and later detected in turkeys [ 23 ]. Subsequently, RVG has been identified in Brazil, Germany, Italy, the Netherlands and South Africa [ 24–26 ]. RVG was found in broiler chicks with runting and stunting syndrome [ 22 ], but its role in the diseases remains unclear.…”

mentioning

confidence: 99%

Genome characterization of Turkey Rotavirus G strains from the United States identifies potential recombination events with human Rotavirus B strains

Chen

Knutson

Porter

et al. 2017

Journal of General Virology

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Rotavirus G (RVG) strains have been detected in a variety of avian species, but RVG genomes have been published from only a single pigeon and two chicken strains. Two turkey RVG strains were identified and characterized, one in a hatchery with no reported health issues and the other in a hatchery with high embryo/poult mortality. The two turkey RVG strains shared only an 85.3 % nucleotide sequence identity in the VP7 gene while the other genes possessed high nucleotide identity among them (96.3–99.9 %). Low nucleotide percentage identities (31.6–87.3 %) occurred among the pigeon and chicken RVG strains. Interestingly, potential recombination events were detected between our RVG strains and a human RVB strain, in the VP6 and NSP3 segments. The epidemiology of RVG in avian flocks and the pathogenicity of the two different RVG strains should be further investigated to understand the ecology and impact of RVG in commercial poultry flocks.

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“…In most surveys both clinically affected and clinically unaffected birds were found to be shedding rotavirus RNA in faeces, so the significance of this is uncertain. Simultaneous or sequential infections with different rotaviral groups is frequently observed in broiler chicken and turkey flocks [ 1 , 9 – 11 ].…”

Section: Introductionmentioning

confidence: 99%

A novel group A rotavirus associated with acute illness and hepatic necrosis in pigeons (Columba livia), in Australia

et al. 2018

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Cases of vomiting and diarrhoea were reported in racing pigeons in Western Australia in May, 2016. Morbidity and mortality rates were high. Similar clinical disease was seen in Victoria in December and by early 2017 had been reported in all states except the Northern Territory, in different classes of domestic pigeon–racing, fancy and meat bird–and in a flock of feral pigeons. Autopsy findings were frequently unremarkable; histological examination demonstrated significant hepatic necrosis as the major and consistent lesion, often with minimal inflammatory infiltration. Negative contrast tissue suspension and thin section transmission electron microscopy of liver demonstrated virus particles consistent with a member of the Reoviridae. Inoculation of trypsin-treated Vero, MDBK and MA-104 cell lines resulted in cytopathic changes at two days after infection. Next generation sequencing was undertaken using fresh liver samples and a previously undescribed group A rotavirus (genotype G18P[17]) of avian origin was identified and the virus was isolated in several cell lines. A q-RT-PCR assay was developed and used to screen a wider range of samples, including recovered birds. Episodes of disease have continued to occur and to reoccur in previously recovered lofts, with variable virulence reported. This is the first report of a rotavirus associated with hepatic necrosis in any avian species.

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Molecular characterization of avian rotaviruses circulating in Italian poultry flocks

Cited by 12 publications

References 33 publications

Metagenomic characterisation of additional and novel avian viruses from Australian wild ducks

Metagenomic characterisation of additional and novel avian viruses from Australian wild ducks

Genome characterization of Turkey Rotavirus G strains from the United States identifies potential recombination events with human Rotavirus B strains

A novel group A rotavirus associated with acute illness and hepatic necrosis in pigeons (Columba livia), in Australia

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