A comparison of individual versus pooled sample testing on pool-level and case-level PRRS virus PCR detection sensitivity and specificity

The time it takes to begin producing porcine reproductive and respiratory syndrome virus (PRRSv)-negative groups of weaned pigs following the new introduction of a non-resident PRRSv and related onset of a clinical reproductive PRRS outbreak in swine breeding herds has become an important means by which to assess the effectiveness of PRRS interventions applied to breeding herds. The measure “time-to-negative-pigs” (TTNP) is typically described as the number of weeks between the star