PRRS infections – where are we post PCV2?

With PCV2 vaccines becoming more available and now many countries are seeing the benefits where does that leave us with PRRS virus, will we still need to vaccinate against it? I have to admit that I have always found PRRS (porcine reproductive and respiratory syndrome) virus an enigma. On its own, the virus causes very little disease in challenge studies, using the European strain in particular (Van Reeth and others, 1994). However when it was mixed with porcine respiratory corona virus or with