An average of 1,160 beds were filled each day last week, with people suffering from the stomach bug.
That’s up 22% on the previous seven days, and more than double the number at the same point last year.
Three wards at St George’s Hospital in Tooting closed at the start of the month due to an outbreak of the vomiting bug.
Bosses there said: “Hand sanitisers such as alcohol gel do not kill the bug – the simple act of good hand washing with soap and water can make all the difference between our beds being used to care for patients, or lying empty at a time when every bed is precious.”
Norovirus symptoms usually last for 2 to 3 days but people remain infectious for up to 48-72 hours after symptoms have stopped, so they should not visit hospitals or care facilities, or prepare food for others.
There is no specific treatment for norovirus, but drinking plenty of fluids is advised to avoid dehydration.
