title: Plaque morphology and pathogenicity for newborn mice of swine vesicular disease virus. I. Wild strains and their clones.
abstract: The population of wild swine vesicular disease virus (SVDV) strains was found non-homogeneous as manifested by varying plaque size and different pathogenicity of the clones obtained. The clones derived from large plaques (5-9 mm)--dominating among wild strains--were more virulent for newborn mice than those obtained from smaller plaques (1-2 mm). To evaluate the pathogenicity of wild SVDV strains the dose index was calculated; the clones were compared by dose index and theoretical pathogenicity index, respectively.
mesh_terms: D000818:Animals; D000831:Animals, Newborn / Q000382:microbiology; D004770:Enterovirus / Q000472:pathogenicity*; D004771:Enteroviruses, Porcine / Q000254:growth & development / Q000472:pathogenicity*; D051379:Mice; D013552:Swine; D013555:Swine Vesicular Disease / Q000382:microbiology; D010948:Viral Plaque Assay; D014774:Virulence