Key result
Genetic analysis reveals South Korean duck circovirus strains belong entirely to predominant genotype 1.
Genotype 1 is the predominant circulating strain of duck circovirus in commercial Pekin ducks in South Korea.
Genotype 1 predominance warrants focused monitoring in South Korean flocks; leaves open vaccine cross-protection and broader surveillance needs.
The genetic organization of the 24 duck circovirus (DuCV) strains detected in commercial Pekin ducks from South Korea between 2011 and 2012 is described in this study. Multiple sequence alignment and phylogenetic analyses were performed on the 24 viral genome sequences as well as on 45 genome sequences available from the GenBank database. Phylogenetic analyses based on the genomic and open reading frame 2/cap sequences demonstrated that all DuCV strains belonged to genotype 1 and were designated in a subcluster under genotype 1. Analysis of the capsid protein amino acid sequences of the 24 Korean DuCV strains showed 10 substitutions compared with that of other genotype 1 strains. Our analysis showed that genotype 1 is predominant and circulating in South Korea. These present results serve as incentive to add more data to the DuCV database and provide insight to conduct further intensive study on the geographic relationships among these virus strains.
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Cha et al. (2013) studied Duck circovirus (n=24). Duck circovirus strains from South Korea vs. GenBank database strains was evaluated on Genotype and phylogenetic clustering. Genetic analysis of 24 duck circovirus strains from South Korea showed that all belonged to genotype 1, which is predominant and circulating in the region.
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