豬第二型環狀病毒

Porcine circovirus type 2 (PCV2) is infectious to post-weaning pigs with the ages of 25 to 120 days and related to postweaning multisystemic wasting syndrome (PMWS) that revealed severe immunosuprresion. Most PMWS cases are associated with PCV2 infection, but PCV2 infection dose not always cause PMWS.