PCV2 Past, present&Future

摘要

These two viruses were not even on the list of possible swine diseases and had not given off any warning that they might become a danger to the industry. PRRS was an immediate surprise and PCV2 managed to cause a lot of confusion at first before it was finally recognised as an emerging pathogen.PCV2 differs from PRRS virus by the fact that PCV2 is a DNA virus, while PRRS is a RNA virus.