Up to 20% of nursing homes in Donegal were affected by an outbreak of Covid-19 during the first wave of the virus.
A report by HIQA shows that dropped to less than 10% in the second wave.
The report says throughout the pandemic, residents of long-term care facilities, such as nursing homes, have been disproportionately affected in terms of incidence, morbidity and mortality.
It found that the probability of an outbreak occurring in a nursing home increased with rising community incidence, the number of beds within the home and other nursing homes being in close proximity.
The full report is available here