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Immunological characterization of the Marin County strain of astrovirus

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Summary

Marin County virus (MCV) was isolated from a stool suspension and serially propagated in human embryonic kidney cell cultures. MCV particles in stool and cell-propagated virus stocks showed reactivity by immune electron microscopy (IEM) with rabbit antiserum to astrovirus type 5. MCV antigen was also detected in two MCV stool samples by enzyme immunoassay (EIA) with an astrovirus group-specific monoclonal antibody. Acute and convalescent sera from 3 of 3 MCV-infected patients showed seroconversion to cell-propagated MCV by EIA. Immunofluorescence of MCV propagated in cell culture showed positive reactivity with an astrovirus group specific monoclonal antibody and astrovirus type 5 antiserum, with some cross-reactivity with astrovirus type 1. Similar results were obtained with the prototype strain of astrovirus type 5. However, in plaque-reduction assays, both the prototype astrovirus type 5 and MCV were neutralized by type 5 antiserum only. We conclude that MCV can be serially propagated by techniques used for previously described astroviruses and is serotypically an astrovirus type 5.

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Authors and Affiliations

  1. Division of Infectious Diseases, University of Massachusetts Medical School, Worcester, Massachusetts, USA

    J. E. Herrmann, R. W. Hudson, Dorothy M. Perron-Henry & N. R. Blacklow

  2. Virus Laboratory, The Institute of Child Health, London, UK

    W. D. Cubitt

  3. Viral and Rickettsial Disease Laboratory, California State Department of Health Services, Berkeley, California, USA

    L. S. Oshiro

Authors
  1. J. E. Herrmann
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  2. W. D. Cubitt
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  3. R. W. Hudson
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  4. Dorothy M. Perron-Henry
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  5. L. S. Oshiro
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  6. N. R. Blacklow
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Herrmann, J.E., Cubitt, W.D., Hudson, R.W. et al. Immunological characterization of the Marin County strain of astrovirus. Archives of Virology 110, 213–220 (1990). https://doi.org/10.1007/BF01311289

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  • DOI: https://doi.org/10.1007/BF01311289

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