Some IT networks have been restored, following cyber attack.
The HSE's warning patients to expect 'widespread cancellations' of hospital appointments again next week.
Some computer systems have been restored after the cyber-attack ten days ago - but most have not.
Emergency departments are still very busy due to the loss of IT equipment, while hospital, community and screening services are still affected.
The HSE's chief operations officer, Anne O'Connor, says the disruption will continue for a long time.
Due to the ransomware attack on our IT systems, there continues to be disruption to our services. More details on service disruptions here: https://t.co/u9WPOp8yEt pic.twitter.com/AOiWgwVU04
— HSE Ireland (@HSELive) May 25, 2021
One hospital group is cancelling about 20,000 appointments as a result of the ransomware attack.
Tony Canavan is the chief executive of the Saolta Group, which manages seven hospitals in the west and north-west.
He says several services are affected.
.

Housing Dept. Unable To Publish Latest Homeless Figures Due To Industrial Action
Motorway Toll Price Hikes Announced For January
Gardaí To Engage In Work-To-Rule During EU Meetings Next Month
Kfm's Local Hero 'Sitting Room' Shines At Irish Music Month National Finale
Tánaiste Won't Be "Pointing Fingers" After Anonymous Comments About Culture Minister
Funeral Of Renowned Musician Dónal Lunny To Take Place In Newbridge This Saturday
"Strong Possibility" Of Attack At Upcoming EU Meetings In Dublin, Says Gardaí
Two Sinn Féin TDs To Be Questioned Over Garvaghy Road Protest