Naturally occurring recombination between distant strains of infectious bronchitis virus

Naturally occurring recombination between distant strains of infectious bronchitis virus New variants of infectious bronchitis virus (IBV) have emerged in Australia despite its geographical isolation and intensive vaccination programs. In the present study, the 3′ terminal 7.2 kb of the genome of a recently isolated variant of IBV (N1/03) was sequenced and compared with the sequences of classical and novel strains of IBV, the two main groups of these viruses in Australia. The comparison revealed that recombination between classical and novel IBVs was responsible for the emergence of the new variant. It was concluded that novel IBVs, which have not been detected since 1993, and which are phylogenically more distant from classical IBVs than turkey coronaviruses, might still be circulating and contributing to the evolution of IBV in Australia. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Naturally occurring recombination between distant strains of infectious bronchitis virus

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Publisher
Springer Vienna
Copyright
Copyright © 2010 by Springer-Verlag
Subject
Biomedicine; Infectious Diseases; Medical Microbiology ; Virology
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-010-0731-z
Publisher site
See Article on Publisher Site

Abstract

New variants of infectious bronchitis virus (IBV) have emerged in Australia despite its geographical isolation and intensive vaccination programs. In the present study, the 3′ terminal 7.2 kb of the genome of a recently isolated variant of IBV (N1/03) was sequenced and compared with the sequences of classical and novel strains of IBV, the two main groups of these viruses in Australia. The comparison revealed that recombination between classical and novel IBVs was responsible for the emergence of the new variant. It was concluded that novel IBVs, which have not been detected since 1993, and which are phylogenically more distant from classical IBVs than turkey coronaviruses, might still be circulating and contributing to the evolution of IBV in Australia.

Journal

Archives of VirologySpringer Journals

Published: Oct 1, 2010

References

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