Illinois reported its first West Nile virus case this week, a woman from DuPage County who is between 45 and 59. There have been 177 cases of West Nile virus nationwide this year, including three deaths, all in Arizona, according to the U.S. Centers for Disease Control and Prevention.

WEST NILE VIRUS

Missouri • Two cases (Clark and St. Louis counties)

Illinois • One case (DuPage County)

Sources: Missouri Department of Health and Senior Services; Illinois Department of Public Health.