Journal Article

Reassortment between Amantadine-Resistant and -Sensitive H1N1 Influenza A Viruses Generated an Amantadine-Sensitive Virus during the 2007–2008 Season

Yuki Furuse, Akira Suzuki, Midori Shimizu, Makiko Kishi, Rumi Sawayama, Mariko Saito, Naoko Fuji, Nao Nukiwa and Hitoshi Oshitani

in The Journal of Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 200, issue 11, pages 1766-1773
Published in print December 2009 | ISSN: 0022-1899
Published online December 2009 | e-ISSN: 1537-6613 | DOI: https://dx.doi.org/10.1086/647989
Reassortment between Amantadine-Resistant and -Sensitive H1N1 Influenza A Viruses Generated an Amantadine-Sensitive Virus during the 2007–2008 Season

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The frequency of the amantadine-resistant H1N1 influenza A virus has been increasing since the 2005–2006 season. It is unclear whether reassortment was involved in this trend. Here, we show that cocirculation of amantadine-resistant and -sensitive strains led to the genesis of amantadine-sensitive reassortant virus during the 2007–2008 season. Thereafter, the reassortant virus predominated. This contrasts with the trend for the H3N2 virus, in which the amantadine-resistant reassortant virus became predominant. The results suggest that it is necessary to monitor genome dynamics to understand the evolution and mechanism of the emergence and spread of antiviral resistance among influenza A viruses

Journal Article.  2767 words.  Illustrated.

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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