It says the lack of access to patient information in hospitals is creating an "extremely high risk" environment.
Some cancer services like chemotherapy are operating at close to full capacity - but there's huge disruption in areas such as mental health.
HSE chief executive Paul Reid says it's going to cost a lot of money to recover from the cyber attack.
UPDATE: Missing Newtownmountkennedy Teenager Located
Gardaí have confirmed Megan is safe and well.
Tánaiste Simon Harris Has No Unresolved Issues Amid Overpayments Controversy
Simon Harris’s office has outlined how he personally has no outstanding matters with the NSSO, as the broader questions about repayments drew scrutiny in the Dáil
Rowing Ireland Refused Permission for Training Centre in Co Wicklow
Wicklow County Council had approved the development but An Coimisiún Pleanála upheld an appeal against that decision.
Social Media Chiefs Must Face The Rigours Of The Law Over AI Imagery Says Wicklow Wexford TD
The fact that there has not been a single prosecution against social media companies for child abuse images is incredible according to Wicklow Wexford TD Brian Brennan
UPDATE: Crews Working To Restore Supply To North Wicklow After Burst Water Mains In Newtownmountkennedy
Uisce Eireann says a complex burst on a busy route has seen some water outages for North Wicklow customers and traffic disruption for motorists.
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