Seroepidemology of Porcine Reproductive and Respiratory Syndrome in Italian intensive pig production

Respiratory disease is the most significant cause of economic loss and the PRRSV is very important because is considered an important etiological agent in the multifactorial respiratory disease.The aim of this work has been to study the epidemiology of PRRSV in Italian pig production system and to verify the presence of the virus in farms where the respiratory disease is normally present