Nursing homes are opening to visitors today for the first time in three months.
Shopping centres across the country are also re-opening under the government's plans to lift restrictions.
It comes as efforts are under way to find out what protection antibodies may have against new infection of Covid-19.
The HSE's starting a new study today of people in Dublin and Sligo to get an overall national estimate of infection in the population.
New figures show the death toll from coronavirus has reached 1,706, after one more person died.
There was an increase of just one case of Covid 19 in Roscommon according to last night's report - bringing the total in the county to 342 with Leitrim and Longford's cases remaining 84 and 285 respectively.
HSE National Clinical Director for Health Protection, Dr Lorraine Doherty, says those who have antibodies will do a follow up test.
