The Maine Center for Disease Control says the first human case of Eastern Equine Encephalitis this year.
The case is an adult from Penobscot County and is the first in Maine since 2015.
The Maine CDC says the person had no history of recent travel outside the state.
From the Maine CDC:
Eastern Equine Encephalitis (EEE) is a disease caused by a mosquito-borne virus. EEE virus can cause disease in humans, horses, and some bird species. EEE virus can be found in the eastern half of the United States, including in Maine. EEE virus spreads through the bite of an infected mosquito. Though it is rare, EEE is very serious. Anyone can get EEE, but people who spend time outdoors are at the highest risk.
Many people infected with EEE have no obvious symptoms. In people who do develop illness, symptoms occur 4 to 10 days after an infected mosquito bite. Symptoms typically last 1-2 weeks.