Isolation of orthoreoviruses from psittacine birds

Meulemans, G.; Dekegel, D.; Charlier, G.; Froyman, R.; Tilburg, JoAnne Van; Halen, P.

doi:10.1016/0021-9975(83)90050-6

Cited by 10 publications

(4 citation statements)

References 15 publications

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“…The apparently high prevalence of reovirus infections in psittacines and other birds in quarantine is consistent with the findings of Graham (1986). Reoviruses have been associated with clinical disease in parrots showing hepatic lesions on post-mortem (Meulemans et al, 1983;Ashton et al, 1984;Graham, 1986), but in only one of the cases in the present study was the isolate made from a parrot with hepatitis. Eleven avian reovirus serotypes have been described (Wood et al, 1980) but because of the lack of correlation with disease it was not considered worthwhile serotyping the reoviruses isolated in the present study.…”

Section: Discussionsupporting

confidence: 90%

Routine virus isolation or detection in the diagnosis of diseases in birds

et al. 1988

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Section: Discussionsupporting

confidence: 90%

Routine virus isolation or detection in the diagnosis of diseases in birds

et al. 1988

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“…The disease that we have reported in the African grey parrots of shipment B is similar to the episodes described in previous reports (Meulemans et al, 1983;Ashton et al, 1984;Clubb, 1984;Wilson et al, 1985;Graham, 1987). In those outbreaks, reovirusassociated necrotizing hepatitis was the major necropsy finding, although other secondary pathogens were often present.…”

Section: Discussionsupporting

confidence: 77%

Reovirus infection in two species of Psittaciformes recently imported into Italy

et al. 2001

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An outbreak of reovirus infection with high mortality in two groups of recently imported psittacine birds is reported. The disease in the two species involved, African grey parrots (Psittacus erithacus erithacus) and Australian king parrots (Alisterus scapularis), had differences in clinical presentation and gross lesions. Reovirus particles were observed by electron microscopy and ultrastructural examination of tissues, and two viruses were isolated in cell culture, one from each bird species. Both isolates were studied by cross-neutralization with antisera against reference avian reoviruses isolated from chickens and parrots, and were found to have the greatest similarity to viruses isolated from a budgerigar and a southern screamer.

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“…Viral infections as well as stress factors are thought to be an important cause of mortality in birds in quarantine (Meulemans et al, 1983;Graham, 1987). Almost one-half (39 out of 84) of the birds examined in this study had a known history of introduction of new birds.…”

Section: Discussionmentioning

confidence: 99%

Reovirus infections associated with high mortality in psittaciformes in The Netherlands

Brand¹,

Manvell²,

Paul³

et al. 2007

Avian Pathology

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In The Netherlands between January 2002 and December 2004, numerous psittaciformes died showing severe splenomegaly and hepatomegaly with multifocal acute necrosis. At the start of the outbreaks mostly parakeets were affected, but later larger parrots were also involved. Seventy-eight birds showed the same features and six were examined completely, including a virological examination. Tests for polyomavirus, Pacheco's disease (herpesvirus) and circovirus psittacine beak and feather disease (PBFD) viruses and Chlamydophila psittaci were carried out. All results were negative, except for two cases of circovirus infection. Many concurrent bacterial and parasitic infections were seen. Immunohistochemistry revealed reovirus antigen in intralesional mononuclear cells, and reovirus-like particles could be observed by negative contrast electron microscopy. A reovirus was grown and the isolates reacted with polyclonal reovirus antiserum but did not react with monoclonal antibodies against chicken reovirus. The virus was therefore considered a psittacine reovirus. Because reoviruses were seen consistently, they seemed to be the most probable cause of the outbreaks. Climate, the introduction of new birds and the transportation of birds might be other factors involved in the disease seen in The Netherlands. No regional influence could be seen; therefore, we suggested that the virus might be widespread and carriers could be a source of re-introduction.

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Isolation of orthoreoviruses from psittacine birds

Cited by 10 publications

References 15 publications

Routine virus isolation or detection in the diagnosis of diseases in birds

Routine virus isolation or detection in the diagnosis of diseases in birds

Reovirus infection in two species of Psittaciformes recently imported into Italy

Reovirus infections associated with high mortality in psittaciformes in The Netherlands

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