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Of 120 clinical specimens obtained from pigs bred on 28 PMWS-affected farms in Slovakia, porcine circovirus type 2 (PCV-2) was detected by single PCR in 77 samples. A short 224bp fragment of ORF2 was used for preliminary grouping of isolates by phylogenetic analysis. Nucleotide sequences of the entire ORF2 region provided more precise genetic typing and segregation of preselected isolates (n=10) into...
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