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Bulletin No. 19 - Fall 2004
VirologyPMWS-PCV2-PCVD-PDNS
VICENTE J, SEGALES J, H?FLE U, BALASCH M, PLANA-DURAN J, DOMINGO M, GORTAZAR C,
Epidemiological study on porcine circovirus type 2 (PCV2) infection in the European wild boar (Sus Scrofa)
Veterinary Research, 35, 2004, 243-253
A nationwide serological survey was conducted in Peninsular Spain in 656 wild boars from 45 geographical sites over a 3-year period from 2000 to 2003. These wild boars were coming from open areas, fenced areas or fenced areas with translocations and artificial feeding. The analysis of the samples by immunoperoxydase monolayer assay (IPMA) revealed that the prevalence of medium to high titers of antibodies to PCV2 was 47.9 ? 1.9% which demonstrates the endemic status of PCV2 in the Spanish wild boar population. As expected, the more intensively managed wild boars had the highest prevalence of antibodies to PCV2 with piglets showing very high levels of seropositivity which confirms the role played by management in the spread of PVC2. In addition, the presence of PCV2 nucleic acid and PMWS lesions was investigated in tissue samples from 55 healthy wild boars and one diseased wild boar by in situ hybridization and histopathology respectively. PCV2 nucleic acid was detected in two of the healthy animals as well as in the 6-month-old pig showing wasting and diagnosed with PMWS which represents the first report of a PMWS case in a wild boar in Spain.
