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New Microbiol. 2008 Jan;31(1):125-30.

Evidence for immunisation failure in vaccinated adult dogs infected with canine parvovirus type 2c.

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Department of Animal Health and Well-being, Faculty of Veterinary Medicine of Bari, Valenzano, Bari, Italy.


An outbreak of canine parvovirus type 2c (CPV-2c) infection in vaccinated adult dogs is reported. The disease occurred in a breeding kennel in Italy and affected 11 dogs aged between 6 months and 2.5 years, that had been repeatedly administered vaccines containing a type 2 (old type) CPV strain. CPV infection was demonstrated in all diseased dogs by an immunochromatographic test. A CPV strain was isolated from the intestinal content of a 20-month-old pregnant Bernese mountain bitch that underwent a fatal outcome. The strain was characterised as CPV-2c by means of real-time PCR assays using minor groove binder probes. The present report provides further concerns about the real efficacy of type 2-based vaccines against the antigenic variants of CPV and stresses the need for developing new vaccines prepared with the variants currently circulating in the dog population.

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