Diagnosis of PRRS.

This paper reviews various diagnostic methods for the detection of porcine reproductive and respiratory syndrome (PRRS) virus or antibodies to PRRS virus reported during the period from 1991 to 1995. In addition, experience from a European Community Concerted Action and especially Danish experiences concerning serological tests are presented. It is concluded that, in general, serological diagnosis with a high specificity and sensitivity is easy to perform on a herd level. However, no serological test has proven to be suitable for individual animal certification.