Key result
Genetic analysis reveals 2 duck circovirus genotypes co-circulating in Guangdong, China.
Observational (n=270)
The study demonstrates that extensive genetically divergent duck circoviruses are co-circulating in duck populations in southern China.
May warrant enhanced DuCV surveillance in Guangdong poultry; leaves open pathogenicity and control implications pending further study.
Duck circovirus (DuCV) is the smallest known virus in waterfowl that infects both domestic and wild duck. Infected ducks often show stunted growth and immunosuppression, which increases the rate of secondary infection with other pathogens. In this study, 270 liver tissue samples were collected to screen the presence of DuCV in Guangdong province, China, and the complete genome sequences were recovered and systematically analyzed. Genetic analyses revealed that sequences determined in this study shared 81.6% to 100.0% genome-wide pairwise identity with previously identified DuCV genomes. Phylogenetic analyses showed that 2 DuCV genotypes with a high infection rate were co-circulating in duck population in Guangdong province, and extensive recombination events have occurred during the evolution of DuCV. Our results expand upon the knowledge regarding the genetic diversity and evolution of DuCV, and also indicate that extensive genetically divergent DuCV are co-circulating in the duck populations in Guangdong, southern China.
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Yuan et al. (2022) conducted an observational in Duck circovirus (DuCV) (n=270). Duck circovirus infection was evaluated on Genome-wide pairwise identity and phylogenetic analysis. Genetic analysis of 270 duck liver samples revealed that 2 duck circovirus genotypes are co-circulating in Guangdong, China, sharing 81.6% to 100.0% genome-wide identity with known genomes.
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