Mosquitoes are more than just a nuisance in the backyard, pasture, campground, and park. They also can spread harmful diseases to humans and animals. Many people have heard that mosquitoes play a role in the transmission of heartworm infections, malaria, and Zika virus. In Michigan, two mosquito-borne viral diseases, West Nile Virus and Eastern Equine Encephalitis, pose a threat to both humans and animals, especially horses. This year, they are of particular concern for human health.

West Nile Virus (WNV) and Eastern Equine Encephalitis (EEE) are viruses that are spread by mosquitoes or other biting insects, known as arboviruses. While both WNV and EEE can be found throughout the United States, EEE is found more often in the eastern part of the country, and WNV is heading farther north in the United States.

Read more about WNV and EEE in Michigan on the College of Veterinary Medicine blog.