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.
More top news
The former WTA World No 1 doubles and No 2 singles champion died after a long battle with cancer.
Centrica, the owner of British Gas, says it will scrap standard gas and electricity tariffs for new customer.
If all pregnant women in the UK slept on their sides from week 27 onward, there would be a 3.7% decrease in stillbirth, a new study claims.