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1 December 2006 Genetic and Pathogenic Characterization of H6N1 Avian Influenza Viruses Isolated in Taiwan Between 1972 and 2005
Min-Shiuh Lee, Poa-Chun Chang, Jui-Hung Shien, Min-Chu Cheng, Chiou-Lin Chen, Happy K. Shieh
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Abstract

This article reports the genetic and pathogenic characteristics of 34 isolates of H6N1 avian influenza viruses isolated in Taiwan between 1972 and 2005. Genetic analyses showed that a unique lineage of H6N1 viruses has been established in domestic chickens in Taiwan since 1997, and this lineage of viruses differs from the H6N1 viruses circulating in Hong Kong and Southeastern China. Pathogenicity tests showed that all Taiwanese H6N1 viruses were of low pathogenicity but might lead to economic loss when associated with other diseases. Hemagglutination inhibition tests showed that antigenic drift has occurred in Taiwanese H6N1 viruses, and sequence comparison has identified a total of five possible antigenic sites on the hemagglutinin molecule of the H6N1 viruses. Some Taiwanese H6N1 viruses could replicate in mice without preadaptation, indicating that these viruses have the potential to cause cross-species infection into mammals.

Min-Shiuh Lee, Poa-Chun Chang, Jui-Hung Shien, Min-Chu Cheng, Chiou-Lin Chen, and Happy K. Shieh "Genetic and Pathogenic Characterization of H6N1 Avian Influenza Viruses Isolated in Taiwan Between 1972 and 2005," Avian Diseases 50(4), 561-571, (1 December 2006). https://doi.org/10.1637/7640-050106R.1
Received: 1 May 2005; Accepted: 1 July 2006; Published: 1 December 2006
KEYWORDS
avian influenza virus
H6N1
Taiwan
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