irv12221-sup-0001-FigS1.docxWord document715KFigure S1. Alignment of the HA antigenic sites of European H1N1 swine viruses isolated since 1995. 130 amino acids sequences (H1 open reading frame numbering) were retrieved in GenBank database and aligned to the CA/09 HA sequence. Amino acid residue changes in major antigenic sites, as defined by Brownlee and Fodor,[22] are shown in boxes.
irv12221-sup-0002-TabS1.docxWord document191KTable S1. Antigenic characterization of influenza viruses isolated from Italian pigs.

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