More signs of West Nile virus have cropped up this summer in Contra Costa County, this time in Knightsen, officials said. A group of mosquitoes collected from a trap in Knightsen, a community in eastern Contra Contra,

Cases of West Nile virus are spreading nationwide, with deaths reported in Colorado and Arizona. What about Florida?

This is the second case of mosquito-borne illness in a person in Central Texas this year. Rain has increased the type of mosquito that carries the virus.