Characterisation of Hungarian porcine circovirus 2 genomes associated with PMWS and PDNS cases

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Abstract
The authors report the data of the first survey on the incidence of postweaning multisystemic wasting syndrome (PMWS) and porcine dermatitis and nephropathy syndrome (PDNS) in Hungary. A PCR method specific for the detection of porcine circovirus 2 (PCV-2) was developed, which proved to be suitable for diagnostic purposes. PCR screening of organ samples from pigs suspected to be affected with PMWS or PDNS revealed the presence of PCV-2 in 80% of the cases. Six PCV-2 genomes from Hungarian isolates were completely sequenced. Phylogenetic comparison with all the available PCV-2 sequences showed that porcine circoviruses circulating in Hungary are more variable than in several other European countries. Two Hungarian strains clustered together with the Spanish strains forming a distinct group; two others fell in a common group with the French, UK, and Dutch strains, whereas another two strains showed the closest relationship to two of the three known German PCV-2 sequences.