Daybreak's Health Editor, Dr Hilary Jones has told viewers that "a million people are estimated to get the Norovirus every year."
"It's around all year long, it's just worse in the winter," he added.
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Having now heard Theresa May's Florence speech, I have a bit more understanding why Boris Johnson cut up rough last weekend.
As Theresa May unveils plans for a two-year transition period, and Nigel Farage says she's 'betrayed' Leave fans...what do voters think?
A milder night ahead with patchy rain in the south giving a soggy and slow start to Saturday in places.