A vaccine is to be trialled on thousands of people to find out if it could protect against norovirus - a stomach bug that causes vomiting and diarrhoea. The easily spreadable winter virus can affect people of all ages and have huge consequences - often closing hospital wards,

The world’s first norovirus vaccine is set to be trialled by the NHS in a bid to ease the strain on already stretched hospitals.

The jab uses mRNA technology to tell the immune system to recognise a ‘foreign’ protein on viruses and mount an attack.