2013 – Early report on norovirus activity in Italy in the 2012-2013 winter season

In the 2012-2013 winter season, ISGEV reports the emergence of a novel norovirus (NoV) variant, GII.4 Sidney 2012. About 75% of the NoV analysed strains between November 2012 and January 20013 were characterised as GII.4 Sidney 2012.

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