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  • Title: Comparative study of the pathogenicity of avian reoviruses.
    Author: Tang KN, Fletcher OJ, Villegas P.
    Journal: Avian Dis; 1987; 31(3):577-83. PubMed ID: 2823774.
    Abstract:
    Reovirus strains CO8 and 81-5, isolated from chickens with malabsorption syndrome, and reovirus strain 176, isolated from chickens with tenosynovitis, were each individually inoculated into 1-day-old specific-pathogen-free chicks. Strain CO8 caused tenosynovitis and pericarditis following footpad inoculation, but it was of low pathogenicity when given by either oral or subcutaneous route. In contrast, strains 81-5 and 176 were highly pathogenic and caused severe mortality following subcutaneous inoculation. Lesions included hepatic necrosis, bursal atrophy, thymitis, and splenic hyperplasia; strain 81-5 also caused pericarditis and myocarditis. Although strain 176 caused higher mortality than strain 81-5, these two strains differed little in the severity and distribution of the lesions they caused. No signs or lesions of typical malabsorption syndrome were observed.
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