Another case of Eastern Equine Encephalitis in a horse has been confirmed in St. Joseph County, the Michigan Department of Health and Human Services has announced.

To help combat this deadly disease, more than 328,000 acres have been treated with insecticide, and a fourth night of aerial treatment is underway.

The latest horse diagnosed with EEE first presented with symptoms on Sep. 23, prior to treatment beginning.

As of Oct. 4, EEE has been confirmed in nine people, with four fatalities.

Cases are in Barry, Berrien, Calhoun, Cass, Kalamazoo and Van Buren counties.

In addition, cases have occurred in 34 animals from 15 counties: Allegan, Barry, Berrien, Calhoun, Cass, Genesee, Jackson, Kalamazoo, Kent, Lapeer, Livingston, Montcalm, Newaygo, St. Joseph and Van Buren. The mosquitos that spread EEE are still active and were caught in traps set Oct. 1 in southwest Michigan.

More information is available at Michigan.gov/EEE.