A dangerous new strain of dog flu is spreading concern across the West. A dog in Montana recently tested positive for the highly contagious virus, and the Washington state health department is warning pet owners after possible exposure at a Seattle-area kennel. In Chicago, the dog flu spread so quickly last year that some shelters were forced to close their doors to prevent further contamination, reports CBS News correspondent Adriana Diaz.
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http://www.cbsnews.com/news/dog-flu-spread-concern-in-west-washington-state-seattle/