SEROSURVEY OF WILD BOAR POPULATION FOR PORCINE PARVOVIRUS AND OTHER SELECTED INFECTIOUS DISEASES IN LITHUANIA

Abstract Wild boar (Sus scrofa scrofa) population in Lithuania was tested for antibodies against porcine parvovirus (PPV), foot and mouth disease virus (FMDV), Brucella sp., classical swine fever virus (CSFV), swine vesicular disease virus (SVDV), and Aujeszky's disease virus (ADV). Blood serum samples were collected from shot wild boars during hunting season in 2004. Using ELISA no antibodies against FMDV (n=504), Brucella sp. (n=23), CSFV (n=591), SVDV (n=12), and ADV (n=24) were detected. With respect to PPV haemagglutination inhibition test was used. Altogether 254 serum samples were tested. It was found that 67 (26.4%) wild boars were seronegative, 64 (25.2%) had PPV antibody titres from 1 to 5 log2 (2-32, possibly passive maternal immunity), 12 (4.7%) -from 6 to 7 log2 (64-128, possibly declining passive maternal immunity or rising active postinfective immunity), 30 (11.8%) -from 8 to 10 log2 (256-1 024, active postinfective immunity), 75 (29.5%) -from 11 to 13 log2 (2 048-8 192, high active postinfective immunity) and in 6 (2.4%) boars the titre was 14 log2 (16 384, very high active postinfective immunity). Thus, our data showed that PPV circulates actively in Lithuanian wild boar population