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| Influenza virus characterisation report December 2011 Scientific Publication - Jan 2012 |
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| Influenza virus characterisation, summary Europe, July 2011 Scientific Publication - Aug 2011 |
| Influenza virus characterisation, summary Europe, May-June 2011 Scientific Publication - Jun 2011 |
| Influenza virus characterisation, summary Europe, April 2011 Scientific Publication - May 2011 |
| Influenza virus characterisation, summary Europe, March 2011 Scientific Publication - Apr 2011 |
| Influenza virus characterisation, summary Europe, February 2011 Scientific Publication - Mar 2011 |
| Influenza virus characterisation, summary Europe, December 2010 Scientific Publication - Jan 2011 |
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