Hmmm well she got the canine flu shot at the rescue, but apparently it is a two-series shot so I decided to go ahead and get the booster. My dogs have ALWAYS had Bordatella because I take them around town to the State Park, the groomers, PetSmart, etc and with all those strange dogs I just think Bordatella is a good preventative shot. I probably won't get the canine flu shot for her after this year, it was special circumstances this time.