Health minister Robin Swann. Picture by Hugh Russell

BETWEEN 50 and 80 per cent of the population could ultimately be infected by coronavirus, Stormont health minister Robin Swann has said.

A total of 12 positive cases had been confirmed in Northern Ireland by last night.

Five came to light on Sunday, with two involving recent travel to northern Italy.

The remaining three were traced through previously-reported cases involving travel to the affected region.

Mr Swann said: "This is not going to get any easier any time soon.

"The indications are it is likely to get much worse and more challenging before we are through the worst."

He said most who contracted the infection recovered and suffered mild symptoms, and all appropriate actions were being taken in relation to all confirmed cases.

The Ulster Unionist added: "We need to walk a fine line and be alert but not be alarmed."

The health minister updated the assembly at Stormont yesterday.

He said: "Whilst the situation is serious, I would like to reassure members that detailed plans are in place in the event of an outbreak spreading across the UK and the Republic of Ireland with sustained community transmission.

"Our health service is used to managing infections and we are well prepared to deal with this."

Education minister Peter Weir urged school principals planning trips to heed Foreign and Commonwealth Office advice warning against non-essential travel to the affected part of Italy.

He said: "We have got to do this in a calm, measured way to try to ensure the most accurate advice is given, that the most professional advice is given and to urge people to follow it."

SDLP leader Colum Eastwood said the public will understand robust measures now to save lives later.

He added: "All public authorities should be considering plans for large scale public events.

"Unfortunately that will require serious conversations about postponing St Patrick's Day celebrations at short notice.

"We must be driven by public health and public safety concerns. Containment now is better that a more serious crisis tomorrow."