Texas sees "big spike" in West Nile Virus.

The CBS Evening News (8/11) reported, "There has been a big spike" in West Nile Virus cases "all over the country, especially Texas.  At least 351 cases have been reported.  In Dallas County it's an epidemic there -- nine people have died from West Nile."  CBS (Bojorquez) added, "Across north Texas officials have blanketed communities with pesticide, trying to kill mosquitos spreading the virus. But it hasn't been enough to stop the epidemic in Dallas. ... Officials have urged residents to protect themselves, but with 10 to 15 new confirmed human cases everyday just in Dallas County, Health and Human Services Director Zachary Thompson says the time to declare a public health emergency is here."