A mosquito trapped in Hampton has tested positive for eastern equine encephalitis.
It is the first mosquito to test positive for EEE in Connecticut this year, according to the Connecticut Agricultural Experiment Station.
The bird-biting mosquito was trapped at Hampton Reservoir on Sept. 19.
Eastern equine encephalitis is one of the most severe mosquito-transmitted diseases in the United States, according to the Centers for Disease Control and Prevention.
It is rare in humans, but there are a few cases reported in the U.S. each year, according to the CDC.
Symptoms of serious cases include the sudden onset of headache, high fever, chills, and vomiting. From there, a patient may become disoriented, have seizures or even fall into a coma.
One-third of those affected will die and most survivors are left with significant brain damage, according to the CDC.