Norovirus outbreak: more than 750,000 affected

Winter vomiting bug cases have hit record levels in London, it was revealed today — with outbreaks more than doubling since this time last year.

The Health Protection Agency said there were 101 norovirus cases between mid-September to the start of December, against 42 for the period last year.

The figures come as hospitals urged victims to stay at home to reduce the spread of the virus, which has closed wards.

Health officials predict as many as 750,000 Britons could be affected by the norovirus bug this winter. The HPA revealed there have so far been 2,630 confirmed cases.

But the agency said many people do not visit a doctor — meaning there are likely to be 288 additional sufferers for every reported case. Schools and businesses in London have been severely affected. Head teachers are warned by the HPA not to let infected pupils or staff return until at least 48 hours after they have stopped vomiting.

Affected schools are also advised to suspend any activities involving cooking, sand and water.