A woman in her 90s became the second Connecticut resident to test positive for the virus this year.
A Windham man was the first person to test positive for Powassan virus this year, according to DPH officials.
The woman lived in New London County and became sick in early May. She was admitted to a hospital with symptoms including fever, altered mental status, headache, chills, rigors, chest pain and nausea, according to DPH.
Her condition worsened and she ultimately became unresponsive. Officials said the died of the virus on May 17, according to DPH.
DPH officials said the woman had a known tick bite which was removed two weeks before her symptoms began.
Lab tests performed by the CDC confirmed the presence of Powassan virus antibodies.