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Table 1 Influenza A(H1N1) virus resistance to oseltamivir in Yamagata, Japan

From: A two-year survey of the oseltamivir-resistant influenza A(H1N1) virus in Yamagata, Japan and the clinical effectiveness of oseltamivir and zanamivir

Season

Total tested

Number (%) of oseltamivir-resistant isolates

neuraminidase H275Y mutation

Dec 2007-Mar 2008

79

2 (2.5)

Dec 2008-Mar 2009

77

77 (100)

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Virology Journal

ISSN: 1743-422X