The PCV2 virion measures approximately 17 nm in diameter, is non-enveloped and consists of a circular single-stranded DNA surrounded by an icosahedral capsid. The ambisense DNA molecule contains about 1.77 kb and 11 putative open reading frames (ORFs). PCV2 has been associated with a number of disease syndromes in pigs. Post-weaning multisystemic wasting syndrome (PMWS) is an important emerging viral disease affecting nursery and grower pigs, which has recently been associated with porcine circovirus type 2 (PCV2) infections. PMWS has been reported in Europe, South East Asia, and the Americas.
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circovirus 2; Circovirus capsid; PCV2; PCV2 capsid