Science Questions

Do noroviruses show the same seasonality as flu?

Sun, 13th May 2007

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Question

Sam asked:

Norovirus have been compared to influenza viruses, so do noroviruses show the same seasonality as flu?

Answer

Yes they do.  Noroviruses used to be called winter vomiting disease, because they mainly occurred in the winter.  Influenza is so called because of “Influenza del freddo” – the influence of the cold in Italian,

The only time you get noroviruses significantly in the summer months is when you get a new strain from an RNA mutation.  More usually you get infections between October and March.

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