The Michigan Department of Health and Human Services says it finished aerial spraying Wednesday night to help prevent the spread of EEE.
No additional treatment is planned, but the department will continue monitoring the situation and may add treatment zones if new cases are found and aerial treatment would be effective.
More than 462,000 acres have been treated.
“Aerial treatment was important to protect the health and safety of Michiganders,” said Dr. Joneigh Khaldun, chief medical executive and chief deputy for health for MDHHS. “We continue to urge communities and residents to take precautions against mosquito bites as the risk of EEE remains until the first hard frost.”
Confirmed cases of EEE in Michigan include a Barry County resident and 32 animals – 30 equine and two deer.
A Montcalm County resident is also suspected to have the disease after preliminary testing.
Impacted counties are Allegan, Barry, Calhoun, Clare, Ionia, Isabella, Jackson, Kent, Livingston, Mecosta, Montcalm, Newaygo and Oakland.
EEE has a 33 percent fatality rate in people who become sick.