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Detection and characterization of a new astrovirus in chicken and turkeys with enteric and locomotion disorders

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In the present paper, we report the unexpected discovery of a new virus in samples from chicken and turkey flocks with clinical disorders such as tenosynovitis, enteric problems, or runting and/or stunting-like conditions. Since 1987, several virus isolation attempts on samples from these flocks resulted in the same macroscopic characteristic lesions in embryonated specific pathogen free eggs, being mortality with bright-red discolouration of legs and wing-tips, a swollen dark-red liver and oedema. Initial work suggested the presence of an agent with characteristics of a non-enveloped RNA virus. Further work, which is described in this paper, showed that the isolated strains formed a new group of avian nephritis viruses, which is genetically and antigenically distinct from known avian astroviruses. Inoculation of a representative strain (isolate 19) of this new group of avian nephritis viruses, provisionally named avian nephritis virus-3, in specific pathogen free layer chicks resulted in diarrhoea, runting and stunting, and even mortality.
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Document Type: Research Article

Affiliations: 1: GD Animal Health Service, P.O. Box 97400AADeventer, The Netherlands 2: Intervet Schering-Plough Animal Health, P.O. Box 315830AABoxmeer, The Netherlands

Publication date: October 1, 2011

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