Porcine encephalomyocarditis is an acute infectious disease of swine caused by encephalomyocarditis virus ( EMCV). This disease is clinically characterized by encephalitis, myocarditis or inflammation around cardiac muscles. 猪脑心肌炎是由脑心肌炎病毒(EncephalomyocarditisVirus,EMCV)引起猪的以脑炎、心肌炎或心肌周围炎为主要临床特征的急性传染病。