Face to face outpatient appointments at Sligo University Hospital are being deferred for the next two weeks.
Management at the hospital say those that have already received a letter for an appointment are being asked NOT to attend unless they get a call from the hospital confirming the appointment.
Virtual outpatient clinics are being held with some exceptions.
Also patients who have developed any Covid-19 symptoms or who have been advised to self-isolate should not attend their appointment.