40% of cases in the last two months have been among people aged between 15 and 34.
The head of the HSE says hospitals are now recording more younger people being hospitalised with Covid-19.
Public health officials are warning the virus is spreading "disproportionately" among young people, with 40% of cases in the last two months among people aged between 15 and 34.
As of this today (Wednesday), 90 patients are in hospital with coronavirus, with 16 of those in intensive care.
HSE Director General Paul Reid says there's a worrying trend emerging.
''We are seeing a high number of cases in younger people that's for sure'', he said.
''In the first three weeks of this month 48% of the cases are below the age of 65, 52% above the age of 65.
''But we are seeing increasingly younger people being hospitalised.
''It is for certain that older people are more vulnerable to the impacts of Covid, but we are seeing more young people being hospitalised through this''.
Last night the the National Public Health Emergency Team confirmed a further 334 of Covid-19 in the Republic.
72% of those cases were people under 45 years of age, with the majority (174) in Dublin.
While 34 are in Cork, 30 in Kildare, 18 in Donegal, 10 in Galway, 10 in Louth, 6 in Clare, 6 in Mayo, 6 in Meath, 6 in Roscommon, 6 in Waterford, 5 in Limerick, with the remaining 23 spread across 11 counties.
