Nation Deadly EEE: Parts of nation see worst outbreak of brain-swelling, mosquito virus in more than a half-century September 30, 2019 Joey Garrison, USA TODAY Comments Off on Deadly EEE: Parts of nation see worst outbreak of brain-swelling, mosquito virus in more than a half-century Three people have died in Massachusetts; three in Michigan, two, in Connecticut and one in Rhode Island. Most of the deaths occurred in recent weeks.