Changes

====Pathogenesis====

====Pathogenesis====

*Principal viral cause of '''SMEDI syndrome''': Stillbirths, Mummification, Embryonic Deaths, and Infertility

*Principal viral cause of '''SMEDI syndrome''': Stillbirths, Mummification, Embryonic Deaths, and Infertility

*Replicates in alimentary epithelium followed by viremia

*Replicates in gastro-intestinal epithelium followed by viremia

*Often '''no clinical signs in breeding and growing stock'''

*Often '''no clinical signs in breeding and growing stock'''

*'''Transplacental''' infection occurs in early pregnancy, with some (but not all) surviving piglets living as carriers

*'''Transplacental''' infection occurs in early pregnancy, with some (but not all) surviving piglets living as carriers