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.
Giammanco, G., De Grazia, S., Tummolo, F., Calderaro, A., Bonura, F., Buonavoglia, A., et al. (2013). Sorveglianza delle gastroenteriti da Norovirus in Italia: comparsa e diffusione della nuova variante GII.4 Sydney 2012. MICROBIOLOGIA MEDICA, 28(3), 115-117.
Sorveglianza delle gastroenteriti da Norovirus in Italia: comparsa e diffusione della nuova variante GII.4 Sydney 2012
GIAMMANCO, Giovanni;DE GRAZIA, Simona;
2013-01-01
Abstract
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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