Antigenic relationship of influenza-virus neuraminidases from Asian,Hong Kong,and Equi-2 strains |
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Authors: | A. J. Baars Henny Frankena N. Masurel |
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Affiliation: | (1) Department of Clinical Respiratory Virology, University Hospital, Leiden, the Netherlands |
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Abstract: | Two Asian influenza strains, the Hong Kong strain and an Equi-2 influenza strain have been investigated. Adsorption isotherms of purified neuraminidases from these strains with isolated antibodies from homologous antisera are given. Cross testing by neuraminidase inhibition and haemagglutination inhibition are reported. Hong Kong neuraminidase appears to be indistinguishable from the earlier Asian neuraminidases, and not related to Equi-2 influenza neuraminidase. The haemagglutinin from the Hong Kong strain is related to earlier Asian strains as well as to the equine strain.In collaboration with the Chief Medical Officer of Health and Epidemiology, Department of Public Health, Den Haag, The Netherlands.It is a pleasure to express our thanks to Mr. J. Jacobs, N. V. Philips Duphar, Weesp (The Netherlands) for his interesting discussions and suggestions; and to Mr. H. de Jonge, Department of Medical Statistics, University of Leiden (The Netherlands) for his advice. |
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