For the complete genome sequence, the PCV2 isolate shared 97.5% homology with the isolate from Hunan(AY556477) and shared higher homology with the isolates from Europe, America and S. Africa isolates, which is from 94.2% to 96%.

• 结果表明病毒的全基因组为1767bp，与国内外分离毒株(15株)的全基因组序列比较发现，该分离株与我国湖南分离株(AY556477)的同源率为97.；5%25，与欧洲、美洲、南非毒株的同源率在94