Officials at Northwick Park in Harrow closed a 82 beds in two wards – a sixth of the beds at the 500-bed hospital – after patients developed the diarrhoea and vomiting illness.
The Richard Wells Ward at Bedford Hospital was also closed to stop the spread of the virus among patients, visitors and staff.
Mark Purcell, of Northwick Park, said 14 patients were confirmed as having norovirus and two more probably had it but were awaiting test results.
One ward is scheduled to reopen tomorrow after beds were deep cleaned. Visiting to the ward has been restricted to one visitor per patient per day.
Eiri Jones, Director of nursing and patient services at Bedford Hospital, said: "It is vital visitors observe the restrictions, as limiting visiting to affected areas really does help to stop the highly contagious norovirus infection spreading. Read More