Public health officials in Massachusetts reported that the national death toll from Eastern Equine Encephalitis (EEE) is now increasing in double-digits.
Authorities say a person at the age of 70s has died from the virus. It is the 10th loss of life in the United States this year.
The rare mosquito-borne illness has been detected in mosquito samples in several states, including Pennsylvania, New Jersey, and Delaware.
The Pennsylvania departments of health and agriculture published a warning on September 21 after confirming eastern equine encephalitis disease in Erie, Carbon, and Monroe counties. The EEE virus was found in pheasants, horses, and a wild turkey.
The CDC says nearly a 3rd of human cases are fatal, and many survivors are left with permanent neurological damage.
Birds carry the virus. Mosquitoes can transmit it to people, horses, and other birds.