Pardo M C, Tanner P, Bauman J, Silver K, Fischer L
Biological Research and Development, Merial Limited, Athens, Georgia, USA.
J Comp Pathol. 2007 Jul;137 Suppl 1:S72-5. doi: 10.1016/j.jcpa.2007.04.015. Epub 2007 Jun 8.
Vaccination of dams with modified-live canine distemper virus (CDV) vaccines will elicit high concentrations of colostral antibody, that although vital for protection of the pup during the first weeks of life, can interfere with active vaccination against the virus. In the present study, 12 pups, 7-9 weeks of age, with maternally derived immunity to CDV, were vaccinated with a canarypox-vectored CDV vaccine. These pups were protected against intravenous challenge with CDV. Three littermate pups that were unvaccinated all developed clinical signs of infection after challenge, and two of these control pups died.
用改良活犬瘟热病毒(CDV)疫苗给母犬接种会引发高浓度的初乳抗体,虽然这对幼犬出生后的头几周至关重要,但可能会干扰针对该病毒的主动免疫接种。在本研究中,12只7至9周龄、具有母源CDV免疫力的幼犬接种了金丝雀痘载体CDV疫苗。这些幼犬在静脉注射CDV时受到了保护。三只未接种疫苗的同窝幼犬在接种后均出现了感染的临床症状,其中两只对照幼犬死亡。