Abstract:
:Porcine circovirus type 2 (PCV-2), is linked to PCV-2 associated disease, which has caused considerable economic loss in the swine industry. Here, we report the genetic diversity of PCV-2 in China. A total of 74 Chinese PCV-2 strains sequenced between 1999 and 2017 were studied. Based on the ORF2 and complete genomes, we found that apart from the PCV-2a, PCV-2b, and PCV-2d genotypes, two unstable recombination genotypes also exist, referred to as IM1 and IM2 genotypes. We found that the patterns of PCV-2 genetic shift in China are similar to the patterns at the global level. Additionally, for the PCV-2 ORF2 gene of Chinese isolates, we found a similar time to the most recent common ancestor and evolutionary rate to the global values. This indicates that PCV2 genetic diversity in China is driven by genetic drift/recombination of local strains and by the sporadic introduction of foreign genotypes from other countries. Overall, our study illustrates the genetic diversity and evolution dynamics of PCV-2 in China.
journal_name
Transbound Emerg Disjournal_title
Transboundary and emerging diseasesauthors
Wang H,Gu J,Xing G,Qiu X,An S,Wang Y,Zhang C,Liu C,Gong W,Tu C,Su S,Zhou Jdoi
10.1111/tbed.13040subject
Has Abstractpub_date
2019-01-01 00:00:00pages
599-605issue
1eissn
1865-1674issn
1865-1682journal_volume
66pub_type
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