Dog Flu concerns rising after 100 dogs infected at Anti-Cruelty Society

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CHICAGO -- Nearly 100 dogs have come down with the flu at Chicago’s Anti-Cruelty Society. It has forced them to stop all dog adoptions until the dogs are better.

The dogs came down with the flu after a dog workers thought was flu-free infected the facility.

Generally speaking it takes 21 days for the virus to run its course and the Anti-Cruelty Society doesn't think this will be the last round of the flu it will see.

Two vaccines have been developed since the dog flu first arrived in the U.S. last year.