The Salt Lake County Health Department on Thursday announced Utah’s first human case of West Nile virus for 2025. The individual was hospitalized with the severe, neuroinvasive form of the mosquito-borne illness, but is now out of the hospital and recovering at home.

The Knox County Health Department has detected West Nile Virus in mosquitoes in Knox County, and is taking steps to reduce the population of mosquitoes by spraying for them.

West Nile Virus has shown up in nearly every area around Massachusetts this summer, with 181 mosquito samples have testing positive for the virus so far, according to the state Department of Public Health.