| Do not vaccinate your dog again. The package information says "healthy dogs only" and your dog can request to never have the vaccine again due to allergic reaction. Read the following from "ehow.com"
The distemper vaccination is usually given to puppies when they are
between the ages of 6 and 8 weeks old. Boosters are given every 2 to 4 weeks
after the initial shot until the puppies are 16 weeks old. One year later,
they receive another vaccine, and booster vaccinations are given again from
1 to 3 years later, based on antibody levels found in blood tests.
Considerations
Some veterinarians caution against the practice of delivering
"booster" vaccinations, including boosters for the distemper vaccine. They
caution that overwhelming the immune system with too many live vaccines can
cause chronic illness and even cancer in pets, in addition to other adverse
reactions, including dry skin, skin eruptions, arthritis, joint maladies,
urinary tract infections and seizure disorders. Speak to your veterinarian
about the benefits versus the risks of repeated distemper vaccinations for
your dog.
http://www.ehow.com/about_5318310_distemper-shot-dogs.html# | 
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