Non-emergency surgery and outpatient activity has been suspended at Naas General Hospital for two weeks following separate Covid-19 outbreaks involving staff and patients.
Latest figures from the Health Service Executive show that there are 30 confirmed cases of Covid-19 being treated at hospital.
There are also two patients suspected of having the virus. One patient with Covid-19 is in intensive care.
Outpatient appointments and endoscopy have been postponed and patients affected by the delays are being contacted.
Both patients and staff are affected by the outbreaks.
As of last Friday, the hospital said that 35 nursing and ten healthcare assistants had been diagnosed with Covid-19.
All routine outpatient appointments and the majority of elective procedures are also being cancelled in both University Hospital Limerick and Ennis Hospital tomorrow and Friday as both hospitals manage active outbreaks of Covid-19.
A statement from the UL Hospitals Group said: "Significant numbers of staff are currently off work and self-isolating having either tested positive for Covid-19 or been designated as close contact.
"We have experienced considerable staffing challenges in recent days and just under 50 patients had their procedures cancelled this Monday, 9 November."
Critical services including cancer surgery, palliative care and dialysis will continue to operate.
The Emergency Department at UHL continues to operate 24-7 for emergency cases as does the Injury Unit and Medical Assessment Unit at Ennis Hospital. Separate Covid and non-Covid pathways are in place to keep patients safe.
Colette Cowan, CEO, UL Hospitals Group, commented: "We regret the impact these service disruptions will have on our patients. These measures however, are now necessary in the interests of patient and staff safety as we manage a complex situation involving multiple outbreaks."
St John's Hospital, Nenagh Hospital, University Maternity Hospital Limerick and Croom Orthopaedic Hospital continue to operate as normal.
Meanwhile, a GP in Kildare has urged people in the county who need medical assistance to contact their own GP in a timely way, rather than leaving things until the evening or weekends, as this may help reduce hospital admissions.
Speaking on RTÉ's Today with Claire Byrne, Dr Brendan O'Shea said GPs have had advisories to reduce as much as possible attendance at the Emergency Department and that GPs will maintain good contact with local nursing homes.
He said it is stressful for patients and for GP colleagues, but he is confident the situation will be brought under control
Dr O'Shea said a very significant volume of service is being delivered by Naas General Hospital today.