Received: 04-05-2017
Accepted: 09-06-2017
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A Molecular Based Study on The Spatio-Temporal Dynamics of Porcine Circovirus Genotype 2d (PCV2d) Circulating in Vietnam
Keywords
PCV2 genotype 2d, molecular epidemiology, spatio-temporal dynamics
Abstract
This study aimed at providing an up-to-date information on the molecular epidemiology of porcine circovirus type 2 (PCV2) circulating in Vietnam with a focus on the spatio-temporal dynamics of a newly defined PCV2d genotype. The results revealed a presence of multiple genotypes/clusters of PCV2, such as 1A/1B, circulating recombinant form (CRF) of PCV2b, and PCV2d. In northern, central and southern Vietnam, a co-circulation of multiple genetic clusters of PCV2 was observed in each sampling location at the same time period. All field strains of PCV2d circulating in Vietnam from 2004- 2017 were predicted to have the most common recent ancestor originated from China, however, they located at different branches of the PCV2d- phylogenetic tree.
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