Wrap: After West Nile virus infected 20 people from Missouri last year and killed three, but the Centers for Disease Control and Prevention says nobody died from the six cases this year.

Department of Health and Senior Services spokesman Ryan Hobart says public awareness is responsible for the drop in cases.

80 percent of those infected don't display symptoms of West Nile. Some develop a fever, joint pain, diarrhea or a rash.

Reporting from the state capitol, I'm Matt Kalish.