Comparison of biological characteristics of H9N2 avian influenza viruses isolated from different hosts

Comparison of biological characteristics of H9N2 avian influenza viruses isolated from different... The pathogenicity and transmissibility of H9N2 influenza viruses has been widely investigated; however, few studies comparing the biological characteristics of H9N2 viruses isolated from different hosts have been performed. In this study, eight H9N2 viruses, isolated from chickens (Ck/F98, Ck/AH and Ck/TX), pigeons (Pg/XZ), quail/(Ql/A39), ducks (Dk/Y33) and swine (Sw/YZ and Sw/TZ) were selected, and their biological characteristics were determined. The results showed that all H9N2 viruses maintained a preference for both the avian- and human-type receptors, except for Sw/TZ, which had exclusive preference for the human-type receptor. The viruses replicated well in DF-1 and MDCK cells, whereas only three isolates, Ck/F98, Ck/TX and Sw/TZ, could replicate in A549 cells and also replicated in mouse lungs, resulting in body weight loss in mice. All H9N2 viruses were nonpathogenic to chickens and were detected in the trachea and lung tissues. The viruses were shed primarily by the oropharynx and were transmitted efficiently to naïve contact chickens. Our findings suggest that all H9N2 viruses from different hosts exhibit efficient replication and contact-transmission among chickens, and chickens serve as a good reservoir for the persistence and interspecies transmission of H9N2 influenza viruses. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Comparison of biological characteristics of H9N2 avian influenza viruses isolated from different hosts

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Publisher
Springer Vienna
Copyright
Copyright © 2015 by Springer-Verlag Wien
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-015-2337-y
Publisher site
See Article on Publisher Site

References

  • Susceptibility and intra-species transmission of the H9N2 G1 prototype lineage virus in Japanese quail and turkeys
    Bonfante, F; Patrono, LV; Aiello, R; Beato, MS; Terregino, C; Capua, I
  • Identification of amino acids in the HA of H3 influenza viruses that determine infectivity levels in primary swine respiratory epithelial cells
    Busch, MG; Bateman, AC; Landolt, GA; Karasin, AI; Brockman-Schneider, RA; Gern, JE; Suresh, M; Olsen, CW
  • Evaluation of chicken-origin (DF-1) and quail-origin (QT-6) fibroblast cell lines for replication of avian influenza viruses
    Lee, CW; Jung, K; Jadhao, SJ; Suarez, DL
  • Genotypic evolution and antigenic drift of H9N2 influenza viruses in China from 1994 to 2008
    Sun, YP; Pu, JA; Jiang, ZL; Guan, T; Xia, YJ; Xu, Q; Liu, LQ; Ma, B; Tian, FL; Brown, EG; Liu, JH
  • Functional balance between haemagglutinin and neuraminidase in influenza virus infections
    Wagner, R; Matrosovich, M; Klenk, HD

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