The Taoiseach says the Covid-19 situation over the next ten days is "critical" for a number of counties.
Cases are rising in a number of areas - and people are being urged to reduce the amount of people they socialise with.
The warning comes are three counties have Covid-19 14-day incidence rates of more than 100 - Dublin, Donegal and Louth.
Roscommon's 14-day incidence rate has been rising for 12 days and the county now has 57 cases per 100,000 people per fortnight, while Leitrim's rate has been falling for the last 6 days and is now at 34.3, while Mayo's 14-day incidence rate is 29.9.
The counties with the lowest incidence rates are now Kerry, Sligo and Tipperary.
The National Public Health Emergency Team is meeting today to discuss if more counties should be moved to Level 3 of restrictions alongside Dublin.