An outbreak of canine influenza requiring the treatment of 100 dogs has closed a Chicago animal shelter. Last spring, more than 1,000 dogs in the Chicago area became sick, according to NBC Chicago. However, there have been no widespread reports of canine influenza in Michigan.
On Thursday, health officials announced that flu shots are only 23 percent effective against this season's strain. This is not a good sign in a season where it seems more and more people are being stricken down with the flu.