This deadly mosquito-borne disease is spreading on the East Coast—and climate change is making it worse

Eastern equine encephalitis is showing up in the North East for the first time in a decade as temperatures rise.

A 41-year-old man in New Hampshire died last week after contracting a rare mosquito-borne illness called eastern equine encephalitis virus, also known as EEE or “triple E”. It was New Hampshire’s first human case of the disease in a decade. Four other human EEE infections have been reported this year in Wisconsin, New Jersey, Massachusetts, and Vermont.