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Table 3 Antigenic analysis of the A(H1N1) isolates in Yamagata by the HI test

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

 

HI titer of post-infection ferret sera to:

Viruses

A/Solomon Islands/3/2006

A/Brisbane/59/2007

A(H1N1) vaccine strains

  

   A/Solomon Islands/3/2006

160

160

   A/Brisbane/59/2007

160

160

2007-2008 isolates

  

   A/Yamagata/1/2008

80

160

   A/Yamagata/66/2008

160

160

   A/Yamagata/67/2008

160

320

   A/Yamagata/68/2008

160

160

   A/Yamagata/69/2008

160

160

2008-2009 isolates

  

   A/Yamagata/125/2008

20

10

   A/Yamagata/126/2008

40

40

   A/Yamagata/128/2008

40

40

   A/Yamagata/45/2009

20

160

   A/Yamagata/80/2009

20

40