3) Vets who think that it is OK to go to much
longer vaccination intervals based on the available information which is primarily derived from unpublished studies that have been widely publicized at meetings and other information sources, but who believe strongly in the value of vaccination.
Pets that routinely enter contaminated areas, pets that are routinely boarded, pets with specific idiosyncrasies (quirky eating habits), pets that live in large groups or that range over large areas, have different needs that may include routine fecal examinations and
shorter vaccination intervals that I usually suggest.
To date, we have not identified a problem in dogs similar to the one in cats that
makes vaccination interval a really important issue, although most vets do recognize that vaccinations cause occasional serious complications such as anaphylactic reactions and rarely immune mediated hemolytic anemia.
There are published reviews that state that one year intervals should be maintained and there have been titer studies of individual components of the canine vaccination series that support
longer vaccinations intervals, although I am not sure if these have been published at this time.
The vaccination interval has changed for adult dogs, but the puppy interval has not.