The Centers for Disease Control says West Nile cases have risen sharply, up 40% from last week alone. This year there are nearly 2,000 new cases and 66 deaths.
More than 70% of the cases have been reported from six states (Texas, South Dakota, Mississippi, Oklahoma, Louisiana, and Michigan) and more than 45% of all cases have been reported from Texas,
The CDC website shows 733 cases so far in Texas, twelve in Pennsylvania.
Experts blame the hot dry weather.