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Comparative trial of the canine parvovirus, canine distemper virus and canine adenovirus type 2 fractions of two commercially available modified live vaccines
  1. J. G. H. E. Bergman, DVM1,
  2. M. Muniz, DVM1,
  3. D. Sutton, BVetmed, MRCVS1,
  4. R. Fensome1,
  5. F. Ling, BSc, PhD1 and
  6. G. Paul, DVM, PhD2
  1. 1 Intervet UK, Walton Manor, Milton Keynes MK7 7AJ
  2. 2 Intervet International, Wim de Körstraat 35, PO Box 31, 5830AA Boxmeer, The Netherlands

Abstract

The results of vaccinating two groups of puppies with commercial vaccines, both of which claimed to provide adequate protection with a final vaccination at 10 weeks of age, were compared. Groups of 19 and 20 puppies with similar titres of maternally derived antibodies against canine parvovirus (cpv), canine distemper virus (cdv) and canine adenovirus type 2 (cav-2) at four weeks of age were vaccinated at six and 10 weeks of age and their responses to each vaccination were measured by comparing the titres against cpv, cdv and cav-2 in the serum samples taken immediately before the vaccination and four weeks later. After the vaccination at six weeks of age, all 19 of the puppies in group 1 had responded to cpv and cdv, and 14 had responded to cav-2; in group 2, 17 of the 20 had responded to cpv, 19 to cdv and 15 to cav-2. In both groups the puppies that did not respond to the first vaccination had responded serologically to cpv, cdv and cav-2 at 10 weeks of age.

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