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Evaluation of the Antigenic Relationships among Canine Parvovirus Type 2 Variants▿

By Alessandra Cavalli, Vito Martella, Costantina Desario, Michele Camero, Anna Lucia Bellacicco, Pasquale De Palo, Nicola Decaro, Gabriella Elia and Canio Buonavoglia

Abstract

The antigenic relationships among the original canine parvovirus type 2 (CPV-2) and the variants CPV-2a, -2b, and -2c were evaluated. Cross-antigenic evaluation revealed clear differences among the CPV variants, which were more appreciable by serum neutralization (SN) than by hemagglutination inhibition. Antigenic differences were found mostly between the original CPV-2 and the variants, but they were also observed among the variants CPV-2a, -2b, and -2c. The variant CPV-2c exhibited a unique antigenic pattern, since it was poorly recognized by the sera of animals immunized with CPV-2, CPV-2a, and CPV-2b. However, animals immunized with CPV-2c exhibited higher SN titers to CPV-2b than to the homologous virus CPV-2c. The observed antigenic differences might drive selection of CPV strains by generating differential immune pressure in the canine population, which raises concerns about vaccine efficacy

Topics: Veterinary Immunology
Publisher: American Society for Microbiology (ASM)
OAI identifier: oai:pubmedcentral.nih.gov:2268271
Provided by: PubMed Central
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