It comes after 1,173 new cases were reported yesterday - the highest daily figure in over 5 months.
Health officials are warning of large increases among under 30s - and are urging unvaccinated people not to meet up indoors.
HSE National Lead for Testing and Tracing, Niamh O'Beirne, says it's not just indoor gatherings that are leading to outbreaks:
"There are also outdoor gatherings of large groups where there have been outbreaks, whether that's a barbecue or outdoor dining in large groups, or general outdoor gatherings, outdoor sports training events and the gatherings after those events, and then you have your typical indoor events also, and house parties, and family gatherings."
