A nursing home in Co Donegal has confirmed 30 cases of Covid-19.
Brindley Manor Nursing Home in Convoy said relatives of residents affected have been contacted and, in line with public health protocols, those residents are isolating in their rooms.
The nursing home said it remains fully operational but is closed to non-essential visitors in line with current Level 3 restrictions.
Speaking to RTÉ Raidió na Gaeltachta, Sinn Féin TD Pearse Doherty said he has been in contact with the Heath Service Executive and has received assurances that all necessary support is being provided to staff and residents.
In a statement, Brindley Manor Nursing Home said: "A Family Liaison Officer has been appointed and will be engaging with the relatives of our residents to provide regular status updates on the health, welfare, and care of their loved ones."
Yesterday, it was confirmed that 31 people tested positive for Covid-19 at a nursing home in Co Laois.
Kilminchy Lodge Nursing Home in Portlaoise said it is dealing with 21 cases of the virus among residents and 10 cases among staff.
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Taoiseach Micheál Martin said there is a "consequential danger" from the spread of Covid-19 in the community that it would spread into nursing homes.
He told the Dáil that testing will continue with the same intensity.
He added there was a meeting of the State's Oversight Committee this morning and it would report the Cabinet on additional measures to protect nursing homes.
Earlier, a consultant in Geriatric and Stroke Medicine at Tallaght University Hospital said better prevention, detection and treatment options for Covid-19 are available to nursing home residents.
Professor Ronan Collins said that when community transmission rises it is "almost inevitable" there will be outbreaks in nursing homes.
Speaking on RTÉ's Morning Ireland, Prof Collins said the expert group that reported to Government after the first wave of the virus allowed for greater understanding of the disease and the measures needed to protect vulnerable residents and staff.
He said "a higher index of suspicious cases" would allow different symptoms to be tracked and lead to more and earlier testing and isolation, along with better treatment options.
Prof Collins said there are going to be outbreaks unless all residential facilities are put in a bubble, but the restrictions on visits is very distressing for many.
He said research from the earlier outbreaks in nursing homes showed that even where 40% of residents in a facility was infected, three quarters survived.