Three hundred and ninety-six people have tested positive for Covid-19 in the latest data.
It's a level of new positive tests not seen since the first wave of the pandemic in April.
No further deaths have been recorded among patients.
Nearly two out of three of today's cases were in Dublin, where 241 people have tested positive.
The second-highest numbers were in Cork, where there 36 cases were confirmed.
There were 19 in Donegal, 12 in Galway, 11 in Meath ad Kildare, 9 in Monaghan, 6 each in Clare, Offaly and Waterford, and five in Wicklow.
27 more are spread across 11 other counties.
Today's figure is the highest in months.
Apart from one day in May when 200 back-dated cases were reported by the Mater Hospital, it's a level of infection not seen since April -- when the entire country was in the "Stay at Home" phase of lockdown.
32,933 people in Ireland are now known to have caught the virus.
Acting Chief Medical officer Dr Ronan Glynn says we now have a "collective task... to break the chains of transmission".
He's asking people to try and see half as many people this week as last week.