Table 2. Swine oral fluid polymerase chain reaction (PCR) results at the sample and farm levels.

^*PRRSV, porcine reproductive and respiratory syndrome virus; PCV2, porcine circovirus type 2; PM, Pasteurella multocida; HPS, Haemophilus parasuis; APP, Actinobacillus pleuropneumoniae; MHP, Mycoplasma hyopneumoniae; MHR, Mycoplasma hyorhinis; SS, Streptococcus suis. ^*Farms were considered positive if one or more pen-based oral fluid sample had PCR-positive results for a pathogen.