By AP/KWMU
St. Louis, MO – Four people have died, including an 88 year-old suburban St. Louis man whose death was reported last week. The new cases are a 76-year-old Kansas City man, a 64-year-old man and 42-year-old woman from St. Louis County, and a 38-year-old woman from Moniteau County. West Nile is spread mostly through mosquito bites. The Centers for Disease Control says the virus has infected more than 3,000 in 37 states and Washington, D.C., and killed 164 people.