Systematic Veterinary Virology

MORPHOLOGY

• Is typical of other pestivirues. he virions are enveloped; spherical to pleomorphic with 40-60 nm in diameter.
• The genetic material comprises of a single molecule non-segmented linear positive-sense single-stranded RNA, which is about 12,300 nucleotides long.
• The BVDV genome encodes for both structural and nonstructural proteins.
• The structural proteins include the capsid protein C and three glycoproteins Erns, E₁, and E₂.
• The capsid protein functions to package the genomic RNA and to provide structure for the formation of the virion envelope. The three glycoproteins are associated with the lipid envelope.