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Recent Advances in Epidemiology of Porcine Circovirus Type 2 and Diagnosis of Porcine Circovirus-Associated Diseases
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作者 LIU Gang JIANG Yan-bin +3 位作者 YU Lei REN Wen-kai WANG Hai YIN Yu-long 《Animal Husbandry and Feed Science》 CAS 2011年第3期25-28,共4页
Porcine cimovirus (PCV) is the smallest animal virus so far and has two serotypes. PCV1 is nonpathogenic, but PCV2 is pathogenic and causes post-weaning multisystemic wasting syndrome ( PMWS). Factors to induce PM... Porcine cimovirus (PCV) is the smallest animal virus so far and has two serotypes. PCV1 is nonpathogenic, but PCV2 is pathogenic and causes post-weaning multisystemic wasting syndrome ( PMWS). Factors to induce PMWS include immunity and infection status of sows, infec- tion time, mixed infection, PCV2 variants, physical status of gilts, and feeding management. For final diagnosis, histopathological changes and ex- istence of PCV2 in lymphoid tissues are professional standards, because fluorescence quantitative RT-PCR is not enough specific or sensitive. The commemial PCV2 vaccines can reduce occurrence of PMWS and PCV-related diseases. This paper reviews recent advances in epidemiology of PCV2 as well as diagnosis and control of PMWS. 展开更多
关键词 Porcine circovirus type 2 Post-weaning multisystemic wasting syndrome EPIDEMIOLOGY DIAGNOSIS
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