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H9N2 Influenza A Viruses from Poultry in Asia Have Human Virus-like Receptor Specificity

Identifieur interne : 001878 ( Main/Exploration ); précédent : 001877; suivant : 001879

H9N2 Influenza A Viruses from Poultry in Asia Have Human Virus-like Receptor Specificity

Auteurs : Mikhail N. Matrosovich ; Scott Krauss ; Robert G. Webster

Source :

RBID : ISTEX:67C89AED9932B02D90DD98A8FA0D9AA85DFC7875

Descripteurs français

English descriptors

Abstract

Abstract: H9N2 influenza A viruses are currently widespread in chickens, quail, and other poultry in Asia and have caused a few cases of influenza in humans. In this study, we found that H9N2 viruses from Hong Kong live bird markets have receptor specificity similar to that of human H3N2 viruses. In addition, the neuraminidase of poultry H9N2 viruses has mutations in its hemadsorbing site, a characteristic resembling that of human H2N2 and H3N2 viruses but differing from that of other avian viruses. Peculiar features of surface glycoproteins of H9N2 viruses from Hong Kong suggest an enhanced propensity for introduction into humans and emphasize the importance of poultry in the zoonotic transmission of influenza viruses.

Url:
DOI: 10.1006/viro.2000.0799


Affiliations:


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<div type="abstract" xml:lang="en">Abstract: H9N2 influenza A viruses are currently widespread in chickens, quail, and other poultry in Asia and have caused a few cases of influenza in humans. In this study, we found that H9N2 viruses from Hong Kong live bird markets have receptor specificity similar to that of human H3N2 viruses. In addition, the neuraminidase of poultry H9N2 viruses has mutations in its hemadsorbing site, a characteristic resembling that of human H2N2 and H3N2 viruses but differing from that of other avian viruses. Peculiar features of surface glycoproteins of H9N2 viruses from Hong Kong suggest an enhanced propensity for introduction into humans and emphasize the importance of poultry in the zoonotic transmission of influenza viruses.</div>
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