Pigs were subjected to challenge infection with a dose of 1x10(5)TCID(50) (50% tissue culture infective dose) virulent CSFV strain. At 1 week post challenge infection, all of the yE2-immunized pigs were alive and without symptoms or signs of CSF. The yeast-expressed E2 protein retains correct immunogenicity and is able to induce a protective immune response against CSFV infection (Lin et al., 2009).
In a seperate study, swine vaccinated with VVR expressing E0 and/or E2 resisted a lethal challenge infection with CSFV. Glycoprotein E0 represents a second determinant for the induction of protective immunity against classical swine fever (König et al., 1995).
