Journal ArticleDOI
Serological Status for Chlamydophila psittaci, Newcastle Disease Virus, Avian Polyoma Virus, and Pacheco Disease Virus in Scarlet Macaws (Ara macao) Kept in Captivity in Costa Rica
I. Herrera,Md. S. R. Khan,Md. S. R. Khan,Erhard F. Kaleta,Hermann J. Müller,G. Dolz,U. Neumann +6 more
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TLDR
The study demonstrates the absence of NDV antibodies in the birds investigated on one hand, but also indicates a health hazard for numerous avian species due to the risk of infections with C. psittaci, APV or PDV.Abstract:
From 1998 to 1999, a total of 128 blood samples were collected from scarlet macaws (Ara macao), kept in captivity in 11 different aviaries located in six provinces of Costa Rica. The sera were examined for antibodies directed against Chlamydophila psittaci, Newcastle disease virus (NDV), avian polyoma virus (APV), and Pacheco disease virus (PDV). Testing by enzyme-linked immunosorbent assay (ELISA), showed 16 (12.39%) of the samples (n = 129) exhibited antibodies directed against C. psittaci. Employing haemagglutination inhibition tests for NDV antibodies, all of the samples were found to be negative. The prevalence of antibodies specific for APV was tested with a blocking ELISA and serum neutralization tests (SNT) and 12 of 128 samples (9.37%) were found to be positive with both tests. In SNT, two out of 128 samples (1.56%) were positive for PDV. This is the first description of the serological status in scarlet macaws in captivity in Costa Rica. The study demonstrates the absence of NDV antibodies in the birds investigated on one hand, but also indicates a health hazard for numerous avian species due to the risk of infections with C. psittaci, APV or PDV.read more
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Journal ArticleDOI
Biology, evolution, and medical importance of polyomaviruses: An update.
Ugo Moens,Andi Krumbholz,Bernhard Ehlers,Roland Zell,Reimar Johne,Sébastien Calvignac-Spencer,Chris Lauber +6 more
TL;DR: A strict co-divergence scenario fails to explain family-wide patterns of diversity, suggesting an important contribution of lineage duplication and, possibly to a lesser extent, recombination and cross-species transmission.
Journal ArticleDOI
Polyomaviruses of birds : Etiologic agents of inflammatory diseases in a tumor virus family
Reimar Johne,Hermann J. Müller +1 more
TL;DR: The available literature on polyomaviruses of birds is reviewed, focusing on the characterization of the known viruses and the diseases caused by them and on approaches to investigate the mechanisms for their pathogenicity.
Journal ArticleDOI
Chlamydia psittaci exposure in pet birds.
TL;DR: The results indicate that close contact with pet birds poses the risk of zoonotic transmission of Chlamydia psittaci.
Journal ArticleDOI
Molecular characterisation of chlamydial isolates from birds.
TL;DR: Fifty-one chlamydial isolates from birds collected in Switzerland were classified by amplification and restriction analysis of the 16S-23S rRNA intergenic spacer region as Chlamydophila psittaci to characterise a broad panel of chlamYDial strains from birds and to apply and verify the methods of classification and differentiation described for chamydial organisms.
Journal ArticleDOI
Molecular Detection and Genotyping of Chlamydia psittaci in Captive Psittacines from Costa Rica
TL;DR: The detection of C. psittaci in captive psittacine birds shows that there is a potential risk for people living or having contact with them and thatthere is a possibility of infecting other birds.
References
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Book ChapterDOI
Newcastle Disease in Free-Living and Pet Birds
TL;DR: All of the approximately 8,000 species of birds seem to be susceptible to infection with Newcastle disease viruses (NDVs), so efforts are needed to protect birds from these viruses.
Journal ArticleDOI
Avian polyomavirus in wild birds: genome analysis of isolates from Falconiformes and Psittaciformes
Reimar Johne,Hermann J. Müller +1 more
TL;DR: Data presented in this investigation show that the polyomav virus isolates obtained from different avian species so far all belong to one genotype and one serotype within the proposed subgenus Avipolyomavirus of the family Papovaviridae.
Journal ArticleDOI
A Novel Polyomavirus (Goose Hemorrhagic Polyomavirus) Is the Agent of Hemorrhagic Nephritis Enteritis of Geese
Jean-Luc Guérin,Jacqueline Gelfi,Luc Dubois,Aimé Vuillaume,Corine Boucraut-Baralon,Jean-Luc Pingret +5 more
TL;DR: It is concluded that the causative agent of HNEG is closely related to but clearly distinct from otherpolyomaviruses; this newly identified virus is named Goose hemorrhagic polyomavirus.
Journal ArticleDOI
Molecular and biological characteristics of avian polyomaviruses : isolates from different species of birds indicate that avian polyomaviruses form a distinct subgenus within the polyomavirus genus
TL;DR: It is proposed that these viruses should be placed in a distinct subgenus (Avipolyomavirus) within the polyomaviruses, based on unique structural and biological properties.
Journal ArticleDOI
Zoonotic Diseases of Birds
TL;DR: The increased incidence of AIDS and the increased use of immune system-compromising medications in humans have resulted in a drastic increase in the zoonotic diseases.
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