The exact same thing happened to us. I said no to the vaccine and the vet was not happy about it but he cannot force a vaccine unto your dog without your authorization. If you truly feel that this vaccine is dangerous to your dog, be firm about it or change vet.
The lepto vaccine does not cover all strains and immunity lasts about six months which mean that to be completely immunized the dog has to be vaccinated twice a year. On the other hand, lepto is often deadly and will leave almost always leave sequels. It's also contagious to human.
Anyways, I've made the decision not to give it anymore even though Akira's reaction was mild, it's almost certain that next time will be worst. I also feel that doping my dog with cortisone for a vaccine is over the top, since cortisone is not good for dogs (or humans!) unless necessary.
The lepto vaccine does not cover all strains and immunity lasts about six months which mean that to be completely immunized the dog has to be vaccinated twice a year. On the other hand, lepto is often deadly and will leave almost always leave sequels. It's also contagious to human.
Anyways, I've made the decision not to give it anymore even though Akira's reaction was mild, it's almost certain that next time will be worst. I also feel that doping my dog with cortisone for a vaccine is over the top, since cortisone is not good for dogs (or humans!) unless necessary.