Chilling winters have been killing people and amid the same, the knocking at North Manchester General Hospital's door by the winter vomiting bug has again concerned doctors and the general public.

Norovirus has hit hardly the wards of the hospital and has even caused the closure of many. Since the hospital chiefs are of the belief that easy access to these wards would allow the lethal virus to further spread.

On 20th December, all wards at the hospital were closed so that no outsider could visit and risk himself or a patient. Each one out there is being suggested to check for any symptoms of the virus like vomiting or diarrhoea. Also, in case they have experienced the same in past 72 hours, they should only ask about their loved one's well-being over the phone.

The Pennine Acute Trust has announced that the hospital wards would remain further closed for any new admissions at least until Saturday. The virus that may also lead to stomach cramps and fever is highly contagious.

However, the illness gets cured within three days usually; the ones with a weak immune system are at high risks of facing worse condition. "This winter is the worst start to the norovirus season on record", said the South Central Ambulance Service's Infection Control Leader Phil Convery.