The flu has caused 17 deaths in Connecticut since August, according to a report the state Department of Public Health released on Thursday.
Fifteen of the 17 were 65 years old or older and two were between 55 and 64, according to state health officials.
There has been a large increase of positive influenza reports over the past four weeks.
More than 3,000 cases of flu have been reported. More than 1,300 people have been hospitalized for the flu since the outbreak began, health officials said, and most of the hospitalizations were during the first week of the flu emergency.
Flu has been reported in all eight counties: