To examine how the inclusion (+) or exclusion (–) of inactivated Leptospira antigens in a vaccine for canine parvovirus type 2 (CPV-2), canine distemper virus (CDV) and canine adenovirus type 2 (CAdV-2) affects antibody titres to CPV-2, CDV and CAdV-1 antigens, household dogs were vaccinated with commercially available vaccines from one of three manufacturers. CPV-2, CDV and CAdV-1 antibody titres were measured 11 to 13 months later and compared within three different age groups and three different bodyweight groups. There were significant differences between CPV-2 antibody titres in dogs vaccinated with (+) vaccine and those vaccinated with (–) vaccine for two products in the two-year-old group and for one product in the greater than seven-year-old group; no significant differences were seen that could be attributed to bodyweight. No differences in CDV antibody titres were observed within age groups, but a significant difference was seen in the 11 to 20 kg weight group for one product. Significant differences in CAdV-1 antibody titres were seen for one product in both the two-year-old group and the ≤10 kg weight group.
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Provenance not commissioned; externally peer reviewed