Published September 19, 2012
The number of U.S. cases of West Nile virus rose by 19 percent in the latest week, slowing slightly from its earlier pace but still putting this year on track to be the worst outbreak since 2003, government figures showed on Wednesday.
So far this year, 3,142 cases have been reported to federal health officials as of September 18, up from 2,636 reported the week before, the Centers for Disease Contr