West Nile outbreak 'one of largest' in US
Aug-25-2012

The current West Nile outbreak is one of the largest in the U.S., with four times the usual number of cases for this time of year, federal health officials said Wednesday.
It's still too early to say how bad the year will end up because most infections are reported in August and September. But never before have so many illnesses been reported this early, said Dr. Lyle Petersen, of the Centers for Disease Control and Prevention.
"We're in the midst of one of the largest West Nile outbreaks ever seen in the United States," said Petersen, who oversees the CDC's mosquito-borne illness programs.
So far, 1,118 illnesses have been reported, about half of them in Texas. In an average year, fewer than 300 cases are reported by mid-August. There have also been 41 deaths this year, the CDC said.
And cases seem to be accelerating: about 400 of the cases were reported in just the last week.
Experts think the mild winter, early spring and very hot summer helped stimulate mosquito breeding and the spread of the virus. Mosquitoes pick up the virus from birds they bite and then pass it on to people.

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