Comparative study on the pathogenicity and immunogenicity of wild bird isolates of avian paramyxovirus 2, 4, and 6 in chickens.

@article{Warke2008ComparativeSO,
  title={Comparative study on the pathogenicity and immunogenicity of wild bird isolates of avian paramyxovirus 2, 4, and 6 in chickens.},
  author={Ashwini Warke and David E. Stallknecht and Susan M. Williams and Nikki Pritchard and Egbert Mundt},
  journal={Avian Pathology},
  year={2008},
  volume={37},
  pages={429 - 434}
}
Based on the haemagglutination inhibition assay, nine antigenically distinct serotypes of avian paramyxoviruses (APMV) are described. Isolates from APMV 2, 3, 6 and 7 can cause respiratory symptoms and/or problems of the reproductive tract that may produce complications if secondary infections occur, while isolates from APMV 4, 5, 8 and 9 rarely produce clinical signs in species from which they are isolated. Isolates belonging to the APMV 1 subtype induce a wide range of disease symptoms… 
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