Norovirus

Some 100,000 people were struck down with the winter vomiting bug over Christmas according to the latest figures, bringing the number of people the Norovirus has affected this season to 1.12 million.

The number of UK people hit by winter vomiting bug norovirus could now stand at more than a million, it is estimated.

An outbreak of the winter vomiting bug could affect almost 880,000 this year, according to the latest figures released by health officals.

After 10 days on board a vomit-ridden Baltic cruise on which over 400 passengers came down with norovirus, the winter bug, Oriana passengers finally arrive home.

Passengers collapsing, restaurants shut down and toilets smelling of vomit: 378 people on the luxury cruise ship Oriana are struck by norovirus, as reports of the bug rise by 72 per cent this season.

Health officials reveal dozens of hospital wards have been closed over the last two weeks as it emerges there has been a 52 per cent rise in cases of the winter vomiting bug.

With the latest figures suggesting that up to 1.12 million people could be affected by an outbreak of norovirus in the UK, Channel 4 News looks at the virus and why it is so contagious.