Most people infected with Jamestown Canyon virus do not become ill, or experience only mild illness. In rare cases, infections can become serious. The Health Department does not recommend avoiding the outdoors but urges precautions. Use appropriate repellant, wear protective clothing, and avoid areas with mosquito activity, when possible.

The Lake County Health Department reported the first human case of West Nile virus in Lake County for the year. The infected resident is in their 70s and became sick in early July, health officials confirmed.