The emergence of the virulent diarrhoea and vomiting bug has seen visitors barred from the four closed wards in a bid to curtail the infection with a further four wards partially closing to the public. Hospital bosses say they are reviewing the situation on a daily basis however visiting hours to all adult wards are restricted to 3pm to 5pm and 7pm to 8pm in order to prevent the bug from spreading. Only two adult visitors per patient are allowed at any one time and children are not allowed to enter wards unless there are exceptional circumstances. Those planning to visit a friend or relative in hospital are asked to ring 01223 245151 to check if a ward is affected before arriving at the hospital. Deputy chief nurse at Addenbrookes Lisa Knight said: We hope people understand that the reason we are putting these restrictions in place is to help protect our patients by stopping the spread of this virus. The best treatment for the virus is to rest at home and drink plenty of fluids. In otherwise healthy people, it normally clears up after around 48 hours but if you are concerned or you have other health problems, speak to your GP or NHS Direct.