Canine nomograph evaluation improves puppy immunization
Abstract
Immunization failure in puppies by modified live vaccines for canine distemper virus and canine parvovirus can occur due to interference from maternally derived antibody. Quantitative measurement of specific antibody (via half-life degradation analysis; nomograph) is available to determine passive transfer from dam. Nomograph enables vaccination timing and followup titer testing tailored for each litter. Objective was to evaluate effectiveness of this approach and use of a nomograph. Puppies (506 puppies < 1 year) that had nomograph completed for their dam were not different in protection rate compared to vaccinated adults and were proven immune at 15.9 weeks. A cohort of similar puppies at 21.6 weeks that did not have nomograph completed for their dam was more likely to have not responded to vaccination.
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