Moreover, of the dogs with a known CPV and
CDV vaccination history, 133 of 142 (93.7 %) and 127 of 136 (93.4 %) dogs, respectively, had serum antibody responses even though they had last received a vaccine more than 2 years ago.
Of the 468 dogs with available vaccine
histories, 401 of 423 (94.8 %) had an adequate response to CPV for more than 1 year after
vaccination, and 390 of 412 (94.7 %) had an adequate response to
CDV for more than 1 year after
vaccination.