Reemerging of Encephalomyocarditis Virus in Pigs in Brazil: Pathological and Viral Characterization

Figure 1

Gross lesions of pigs naturally infected by EMCV. (a) Heart: the surface of the epicardium and myocardium presents multifocal to coalescent areas of 0.5–1 cm in diameter or in a linear pattern with a pale tan discoloration on both sides of the ventricle. Pig 2, Farm B. (b) Heart cross-section: nearly 80% of the myocardium of both atria, ventricles, and interventricular septa have multifocal to coalescent pale tan discoloration foci measuring 0.3–1 cm in diameter with occasional opaque white areas (arrow) measuring up to 0.5 cm in diameter. Microscopically, the latter corresponds to dystrophic mineralization. Pig 3, Farm B.

(a)

(b)