The HSE's warning people to expect 'significant interruption' to health services again next week.
It says the situation has improved a little, with some computer systems working again after the ransomware attack.
Up to 30,000 appointments have been cancelled in seven hospitals in the west and north-west over the past three weeks.
Tony Canavan is the chief executive of the Saolta Group, which manages them - he says the disruption will continue.
Visit our Covid-19 info hub for the latest news and information on the Covid-19 pandemic
