Abstract
The porcine circovirus (PCV) is the main cause of the postweaning multisystemic wasting syndrome (PMWS). Three species are currently known, named PCV1, PCV2 and more recently PCV3. PCV1 does not cause pathology in pigs, with PCV2 and PCV3 being the main etiological agents causing a severe economic impact on the world suine production. A vaccine for PCV2 prevention is available, but the on…