The most common underlying health condition reported in COVID-19 cases here is chronic heart disease, according to the Department of Health.
It says of 15,450 coronavirus cases, where information is available, 53% had at least one underlying condition.
The most common were chronic heart disease (15%), chronic respiratory disease (11%) and diabetes (6%).
The information came as 10 more people with the virus died here on Wednesday.
There have now been a total 1,497 COVID-19 related deaths, and 23,401 confirmed cases.
Data of all cases as of midnight on Monday reveals:
- 57% are women and 43% are men
- The median age of confirmed cases is 48 years
- 3,050 cases (13%) have been hospitalised
- Of those hospitalised, 389 cases have been admitted to ICU
- 6,997 cases are associated with healthcare workers
Dublin has the highest number of cases at 11,242 (49% of all cases), followed by Kildare with 1,344 cases (6%) and then Cork with 1,238 cases (5%).
Of those for whom transmission status is known community transmission accounts for 60%, close contact is 37%, and travel abroad accounts for 3%.
Dr Ronan Glynn, Deputy Chief Medical Officer at the Department of Health, said on Wednesday that 84% of people who have been diagnosed to date with COVID-19 have recovered.
While Dr Tony Holohan, Chief Medical Officer, said: "I would urge everyone to become familiar with the behaviours that we all need to maintain, including respiratory etiquette, physical distancing and handwashing.
"As we begin to think about easing restrictions these behaviours will become even more important."
