How climate change is expanding the reach of a rare and deadly mosquito-borne illness

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. 

Though this outbreak is small and triple E does not pose a risk to most people living in the United States, public health officials...