Limerick's incidence rate of Covid-19 cases per 100,000 people is now 441.8, almost four times the national average of 113.5.
In the two-week period to June 8th, 861 cases of the virus were recorded in the county, 16 per cent of the 5,404 cases reported nationally.
Donegal had the second highest incidence rate in the country, with 170.2 cases per 100,000, followed by Westmeath with 140.8.
Sligo now has the lowest rate of Covid-19, recording just six new cases over the two weeks, the same number as Leitrim. The two counties now have incidence rates of 9.2 and 18.7 cases per 100,000 respectively.
Sixteen counties have rates below 100, while all counties, with the exception of Limerick are below the 200 mark.
In addition to Sligo and Leitrim, Galway, Longford, Kerry, Kilkenny and Monaghan also have rates below 50. Longford, Kilkenny and Monaghan reported fewer than 30 cases in the two-week period, while Kerry had 61 new cases and Galway had 128.
The increasing incidence in Limerick has caused public health officials to urge people in the county to attend walk-in test centres in an attempt to break the chain of transmission.
Public Health Mid-West said 85 cases were identified in Co Limerick on June 9th, while there were 10 in Clare, and less than five in north Tipperary, both of which are also covered by the Mid-West region.
