Five areas around the border with the North have the highest coronavirus rates in the country.
The latest figures from the Health Protection Surveillance Centre (HPSC) show four areas in Donegal, one in Louth have 14-day rates around three times higher than the national average.
Letterkenny in County Donegal has the highest rate in the country at 288.7 cases per 100,000 people followed nearby Carndonagh at 271.2.
Dundalk/Carlingford in County Louth is in third place at 257.8
Back in Donegal, Milford is in fourth at 254.2, with Buncrana in fifth at 250.4
The data relates to the two-week period leading up to Monday, when the national rate was 87 cases per 100,000 people.
Other badly hit areas include Claremorris in County Mayo where the rate was 232 and Piltown in County Kilkenny where the figure is 215.
There are 17 areas around the country where there were less than 5 cases for every 100,000 people.