In Florida(at least) it is the exact same vaccine. My vet told me that Curri could not (per Fl law) get the 3 year vac until her SECOND inoculation.....also sounds like a gimmick to me...... (same shot down to the batch number)
I question any and all vacs given to my pups these days.....I feel we are severely over vaccinating our animals and a lot of vets know better but are unwilling to "un~line" their pockets and stand up for our pets