38 patients in five hospitals in north Wales are experiencing symptoms related to the winter vomiting bug, norovirus.
Betsi Cadwaladr health board said that 11 wards are currently affected in Ysbyty Glan Clwyd, Colwyn Bay hospital, Ysbyty Gwynedd, Dolgellau hospital and Wrexham Maelor.
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Prime Minister Theresa May announced the decision from Downing Street.
A fairly cloudy night to come with hill and coastal fog lingering in places. This could be thick enough for the odd spot of drizzle.
Father-of-three Nick Bickerstaff, from Denbighshire, was waiting for daughter Ellen and her friend in the foyer at the end of the concert.