Gavin Grey: UK correspondent on UK hospitals trying the world's first norovirus vaccine - Heather du Plessis-Allan Drive

A new vaccine will be trialled in the UK to protect people from the worst of norovirus ahead of the winter season.

The contagious stomach bug causes vomiting and diarrhoea - and can have a huge strain on workplaces, schools and the health system. 

UK correspondent Gavin Grey says the effects of the vaccine on volunteers will be monitored on potential volunteers.

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