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*No known treatment to reverse persistent infection or to cure mucosal disease
*No known treatment to reverse persistent infection or to cure mucosal disease
*BUT, without exposure to BVDV, the whole herd is at risk as there is no developed immunity
*BUT, without exposure to BVDV, the whole herd is at risk as there is no developed immunity
*Vaccination of dams before pregnancy will prevent PI calves being born
*'''Vaccination of dams''' before pregnancy will prevent PI calves being born
**'''Beta-propiolactone inactivated''' vaccine
**'''Beta-propiolactone inactivated''' vaccine
**Combine with screening for antigen and removal of PI animals
**Combine with screening for antigen and removal of PI animals