Visitors banned and more wards closed as hospitals battle worst norovirus outbreak for five years

'Please, please don't visit': Hospitals in lockdown amid worst norovirus outbreak in five years Birmingham's City Hospital has imposed the ban until further notice after an outbreak of the bug forced four wards to close Comes as Doncaster & Bassetlaw trust takes to Twitter, begging those with any symptoms to stay away Cases of winter vomiting bug up 72% on last year | UPDATED: 13:16 GMT, 14 December 2012 Hospitals are going into lockdown in a desperate bid to get the winter vomiting bug under control. Birmingham's City Hospital announced today that visitors are banned until further notice, after an outbreak of the bug forced the closure of four wards