ELIMINATION OF PORCINE REPRODUCTIVE AND RESPIRATORY SYNDROME VIRUS FOLLOWING A CLINICAL PRRS OUTBREAK IN A NEGATIVE HERD: PRELIMINARY RESULTS

摘要

Recent research and preliminary results from a number of ongoing research efforts have demonstrated the possibility to eliminate PRRS virus from growing pig and breeding herd operations through protocols that do and do not include the use of MLV PRRSvaccine. The goal of this study was to evaluate a method that incorporates the strategic use of a modified live vaccine into a protocol designed to eliminate PRRS virus following an outbreak of the disease in a PRRS virus negative breeding and growing pig herd.