4,115 new cases of Covid-19 have been reported this evening.
The latest figures show the country's 14-day incidence rate is 1,334 cases per 100,000 people - with Carlow, Westmeath and Kildare having the highest rates.
The Chief Medical Officer, Tony Holohan, is expressing 'very significant concern' at the situation - saying we're in an 'uncertain' and 'unstable' situation.
511 Covid patients are in hospital, down 19 from yesterday, with 110 in intensive care, down five.
While just six cases of the new Omicron variant have been identified here, hundreds have been reported in the UK.
The government has now advised that anyone arriving in Ireland from Britain should use antigen tests for five days.