Microbiologia Medica (Mar 2014)

Norovirus GII.4 Sydney 2012 in Italy

  • Giovanni Maurizio Giammanco,
  • Simona De Grazia,
  • Fabio Tummolo,
  • Adriana Calderaro,
  • Floriana Bonura,
  • Alessio Buonavoglia,
  • Vito Martella,
  • Maria Cristina Medici

DOI
https://doi.org/10.4081/mm.2013.3263
Journal volume & issue
Vol. 28, no. 3

Abstract

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In the 2012-2013 winter season, global surveillance for norovirus circulation evidenced the onset of a new norovirus GII.4 variant, termed Sydney 2012. In Italy, ISGEV hospital-based surveillance revealed that this variant already circulated at low frequency in the winter season 2011-2012 and emerged definitively only in the late 2012. This lag-time pattern mirrors the findings reported elsewhere and suggests that the novel variant circulated at low prevalence before spreading globally.

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