That's despite a large number of people across the country presenting to A&E with severe symptoms.
The HSE says most flu like symptoms can be treated by people at home and the executive is advising people to only visit their Accident and Emergency Department if necessary.
Eight people have died so far this winter due to flu related illnesses.
The HSE is advising influenza activity can circulate for a least the next eight to twelve weeks.
Older people are more likely to be affected.
Consultant with the HSE in the Midlands Dr. Ina Kelly says this years vaccine is effective: