Michigan Health Officials Confirm First Human EEE Case since 202108/20/2026Michigan health officials have confirmed a locally acquired case of eastern equine encephalitis in a resident of northern Michigan’s Roscommon County. It’s the first EEE human case reported in Michigan since 2021. EEE is a virus spread to humans by infected mosquitoes and is a rare but serious disease. Health officials are urging to take precautions against mosquito bites.