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Originally Posted by Teegy  Titers show the level of immunity in their system. Other than rabies that's required by law after their puppy shots distemper and parvo really aren't required. |
Dr. Schultz, the expert most frequently cited for duration of immunity, found that the minimum duration of immunity for the non-rabies core vaccines is 5 to 7 years (see
http://www.canine-health-concern.org...20Vaccines.pdf). This is based on challenge studies, which means that vaccinated dogs were exposed to the virus to determine whether or not they were still immune to the diseases. The minimum duration of immunity for rabies vaccine is 3 years. This assumes that the dogs were properly vaccinated at the right time. Sometimes puppies are vaccinated too early for the vaccinations to be effective. This is why many experts say that dogs should receive their core vaccines AT LEAST until 7 years of age.