Serial passage in ducks of a low-pathogenic avian influenza virus isolated from a chicken reveals a high mutation rate in the hemagglutinin that is likely due to selection in the host

Serial passage in ducks of a low-pathogenic avian influenza virus isolated from a chicken reveals... A comparative study of the ability of three low-pathogenic avian influenza virus (LPAIV) isolates to be transmitted from duck to duck was performed. Pekin ducks were inoculated with two LPAIV isolates from chickens (A/Ck/PA/13609/93 (H5N2), H5N2-Ck; A/Ck/TX/167280-4/02 (H5N3), H5N3-Ck) and one isolate from a wild bird (A/Mute Swan/ MI/451072/06 (H5N1), H5N1-WB). During the establishment of the passage model, only two viruses (H5N1, H5N2) were able to be transmitted from duck to duck. Transmission of these isolates was dependent on the inoculation dose and route of infection. Analysis of swab samples taken from ducks revealed that the wild-bird isolate, H5N1-WB, was primarily shed via the cloacal route. The chicken isolate, H5N2-Ck, was isolated from cloacal as well as oro-pharyngeal swabs. Analysis of the amino acid sequences of the viral surface glycoproteins showed that the hemagglutinin (HA) of the H5N2-Ck isolate was under a stronger evolutionary pressure than the HA of the H5N1-WB isolate, as indicated by the presence of a larger number of amino acid changes observed during passage. The neuraminidase (NA) of both viruses showed either no (in the case of H5N1-WB) or very few amino acid changes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Serial passage in ducks of a low-pathogenic avian influenza virus isolated from a chicken reveals a high mutation rate in the hemagglutinin that is likely due to selection in the host

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Publisher
Springer Journals
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/s00705-015-2504-1
Publisher site
See Article on Publisher Site

Abstract

A comparative study of the ability of three low-pathogenic avian influenza virus (LPAIV) isolates to be transmitted from duck to duck was performed. Pekin ducks were inoculated with two LPAIV isolates from chickens (A/Ck/PA/13609/93 (H5N2), H5N2-Ck; A/Ck/TX/167280-4/02 (H5N3), H5N3-Ck) and one isolate from a wild bird (A/Mute Swan/ MI/451072/06 (H5N1), H5N1-WB). During the establishment of the passage model, only two viruses (H5N1, H5N2) were able to be transmitted from duck to duck. Transmission of these isolates was dependent on the inoculation dose and route of infection. Analysis of swab samples taken from ducks revealed that the wild-bird isolate, H5N1-WB, was primarily shed via the cloacal route. The chicken isolate, H5N2-Ck, was isolated from cloacal as well as oro-pharyngeal swabs. Analysis of the amino acid sequences of the viral surface glycoproteins showed that the hemagglutinin (HA) of the H5N2-Ck isolate was under a stronger evolutionary pressure than the HA of the H5N1-WB isolate, as indicated by the presence of a larger number of amino acid changes observed during passage. The neuraminidase (NA) of both viruses showed either no (in the case of H5N1-WB) or very few amino acid changes.

Journal

Archives of VirologySpringer Journals

Published: Oct 1, 2015

References

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