Buying a new puppy? Easy does it on vaccinations. A new study of duration of immunity for core viral vaccines in dogs suggests that puppy shots may confer lifelong immunity when administered after 16 weeks.
Research veterinarians at the University of Wisconsin Veterinary School recently published findings of a study that examined the duration of immunity for core viral vaccines in dogs that had not been revaccinated for as long as 9 years.
These animals had serum antibody to canine distemper virus (CDV), canine parvovirus type 2 (CPV-2) and canine adenovirus type-1 (CAV-1) at levels considered protective. When challenged with these viruses, the dogs resisted infection and/or disease. Thus, even a single dose of modified live virus canine core vaccines against distemper, parvvirus and adenovirus or modified live vurus feline core vaccines against feline parvovirus, when administered at 16 weeks or older, could provide long-term immunity in a very high percentage of animals, while also increasing herd immunity.
Before 16 weeks, maternal antibodies can thwart the effect of vaccination, resulting in inadequate protection against common canine and feline diseases.
Drs. R D Schultz, B Thiel, E Mukhtar, P Sharp, L J Larson, of the Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, participated in the study and published these findings in the January 2010 edition of Comparative Pathology.