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Bulletin No. 18 - Spring 2004
VirologyPMWS-PCV2-PCVD-PDNS
DE BOISSESON C, BEVEN V, BIGARRE L, THIERY R, ROSE N, EVENO E, MADEC F, JESTIN A
Epidemiologie moléculaire de circovirus porcin (PCV2) en relation avec la maladie d'amaigrissement du porcelet - (Molecular epidemiology of porcine circovirus in relation with post-weaning multisystemic wasting syndrome).
Journées Recherche Porcine en France, 36, 2004, 333-338
Both PCV1 and PCV2 were investigated farms with or without PMWS in Brittany (France). PCV1 was not detected in any of the farms while PCV2 was detected in 100% of PMWS-affected farms and in 76% of PMWS-non-affected farms. Thirty-eight PCV2 isolates were sequenced and 23 new variants showing 94.6 to 99.9 % nucleotide identity were identified. No virulence molecular marker was identified in PCV2 isolates from PMWS-affected farms. Thus, PMWS outbreaks in Brittany are not to ascribe to the emergence of a new genotype of PCV2 but rather to still unknown triggering factors.
