Does the kennel cough vaccine lower the risk of canine flu?
No. The kennel cough vaccine protects dogs against Bordetella bronchiseptica. In the course of their regular vaccine schedule, most dogs also receive protection against Parainfluenza virus (another contributor to kennel cough). However, neither Bordetella bronchiseptica nor Parainfluenza have anything in common with the influenza virus. Despite all that, some vets still think that protection against kennel cough just might help a dog fight off illness associated with canine influenza.