Newly-designed primer pairs for the detection of type 2 porcine reproductive and respiratory syndrome virus genes.

Porcine reproductive and respiratory syndrome (PRRS) is an infectious disease, caused by PRRS virus (PRRSV), that critically affects the swine industry. While the detection of PRRSV genes plays a key role in PRRS control, the PRRSV genome is known to undergo frequent mutation. Nevertheless, primer pairs widely used for the detection of PRRSV genes were designed between 1995 and 2010.