The level of influenza circulating continues to increase, according to the Health Service Executive's Health Protection Surveillance Centre.
Doctors are seeing around 42 cases for every 100,000 people - double the normal baseline rate.
While influenza is being seen in all age groups, the highest rates are being seen in those aged 5-14 and 15-64.
There have been 118 people hospitalised with influenza this season, with 34 of those in the week to 16 February.
Eight influenza-associated deaths have been reported this season.
Six acute respiratory outbreaks were reported to the HPSC last week.
All of them were in residential care facilities, long-stay units or community hospitals.
Some hospitals have imposed visitor restrictions due to circulating influenza.