Westmeath, Clare, Kilkenny and Longford had the highest incidence rate of Omicron over Christmas, with the rate four times higher than other counties.
According to figures contained in this HPSC report, the incidence rate in Westmeath was the highest in the country over Christmas, with 3,056 per 100,000 people.
This was followed by Clare at 1,974 and Kilkenny at 1,855 people per population
The overall national average was 1,366 - brought down by counties like Kerry, where the incidence rate was at 884 per 100,000 people
The figures show Dublin had the 11th highest incident rate in the country, despite being the first county to feel the impact of Omicron early last month.
The report also shows the median age of those with Omicron was 29 years of age.
