Crowds gathered in Dublin, Cork and Galway,
A NPHET member says potentially 'super-spreader events' last weekend could lead to a spike in cases later this week.
It's after crowds gathered in Dublin, Cork and Galway, with concerns of a repeat this Bank Holiday Weekend.
Dr Mary Favier fears a fourth wave of Covid in the coming weeks - similar to the spike after Christmas, when restrictions eased.
She's worried about the impact the recent socialising will have of case numbers.
Dr Favier says it's vital to avoid a repeat of the sharp rise in cases after Christmas - and a fourth wave.
.

Pilot Found Guilty For His Role In Importing €8.4m Worth Of Cocaine Into Longford
CCPC Reminds Online Shoppers of Refund Rights As Fastway Jobs at Risk
Tirlán’s Age-Friendly Project In Kildare Wins Recognition Award
One Dead, Eight Injured In Crashes Over Bank Holiday Weekend
Gardaí Investigating After Woman's Body Was Found In Meath
Teenager Hit In Face By Firework In Athy Left With Severe Burns
Increased Tolls For M50 And Port Tunnel To Be Introduced In January
Masked Attacker Chases Homeowner Upstairs With Machete In Violent Kildare Town Break-In