【摘 要】
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Background:Porcine circovirus type 2 (PCV2) is considered to be the primary causative agent of postweaning multisystemic wasting syndrome (PMWS),which has become a serious economic problem for the swi
【机 构】
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Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology,Harbin Veter
【出 处】
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2013国际猪繁殖与呼吸综合征学术研讨会
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Background:Porcine circovirus type 2 (PCV2) is considered to be the primary causative agent of postweaning multisystemic wasting syndrome (PMWS),which has become a serious economic problem for the swine industry worldwide.The major genotypes,PCV2a and PCV2b,are highly prevalent in the pig population and are present worldwide.However,another newly emerging PCV2b genotype mutant,which has a mutation in its ORF2-encoded capsid protein,has been sporadically present in China,as well as in other countries.It is therefore important to determine the relative virulence of the newly emerging PCV2b genotype mutant,compared with the existing PCV2a and PCV2b genotypes,and to investigate whether the newly emerging mutant virus induces more severe illness.
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