The HSE has shut down its entire IT system after a major ransomware cyber attack.
The Covid vaccination programme isn't affected - but the Rotunda Hospital has cancelled most appointments for today - except for women who are more than 36 weeks pregnant.
It's urging people not to attend the hospital unless it's an emergency.

Keith Grace, Karol Sadlier, Ceola and Carron announced as the station's A New Local Hero finalists