Dr. Keith Poulsen is a professor of veterinary medicine at

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A new strain of flu that likely came from Asia has sickened thousands of dogs in the Midwest, experts say.
The new dog flu virus, which has not been seen before in U.S. dogs, has infected more than 1,000 dogs and is responsible for six dog deaths in Illinois, Wisconsin, Ohio and Indiana, according to experts from the University of Wisconsin-Madison and Cornell University who have been collecting and testing samples of the virus.
"The dog population here has never seen this strain before," said Dr. Keith Poulsen, a professor of veterinary medicine at the University of Wisconsin-Madison.