Porcine Circovirus Diseases(PCVD)or Porcine Circovirus Associated Diseases(PCVAD)was caused by Porcine Circovirus Type 2(PCV2),which only in the last 5-10 years had a worldwide explosion,and made great loss to the pig...
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Porcine Circovirus Diseases(PCVD)or Porcine Circovirus Associated Diseases(PCVAD)was caused by Porcine Circovirus Type 2(PCV2),which only in the last 5-10 years had a worldwide explosion,and made great loss to the pig ***,sperm and direct contacts are verified to be the regular pathways for viral transmission,however,these regular pathways could not properly explain the fact that the diseases were spread so quick to every corner of the world in so short period of time,therefore a special pathway and mechnism for the viral transmission behind these facts remians *** we show that PCVD could be transmitted by the Spray Dried Porcine Plasma(SDPP)powder through the viral genomic DNA directly or the inactivated viral *** the human foods with swine products source were found seriously contaminated with PCV2 *** results demonstrate that PCVD perhaps is the first animal infectious disease that transmitted in field by DNA directly and there probably exist the huge risks for human beings to be infected by PCV2 through the daily intake of foods contaminated by PCV2 DNA.
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