The Health Minister is to meet Nursing Homes Ireland again on Friday to discuss the outbreak across the sector.
He met the body yesterday to see what more can be done to stop the spread of the virus.
But Simon Harris says up to 350 nursing homes still haven't seen any cases of Covid-19.
"Many many of our nursing homes still haven't seen the coronavirus, and nursing home owners and staff are working really hard to keep people safe.
"I want to keep a really close eye on this - I want to do everything that is humanly hospital to protect older people, and people with underlying health conditions many of whom reside in nursing homes.
"I'll be meeting Nursing Homes Ireland by teleconference on Friday, and we're continuing to mintier day by day how we provide more support."
