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Virus MDT┼ ICPI╪ rNDV 96 h 0.53 rNDV/p72 > 120 h 0.00 Note: ┼Mean death time (MDT) pathotype deï¬nition: virulent strains, < 60 h; moderately virulent strains, 60 90 h; avirulent strains, > 90 h; ╪Intracerebral pathogenicity index (ICPI) is the criterion to classify the virulence of NDV isolates recommended by Office International Des Epizooties (OIE). Pathotype deï¬nition: virulent strains, 1.5 to 2.0; moderately virulent strains, 0.7 to 1.5; avirulent strains, 0.0 to 0.7. Table 1. Pathogenicity of recombinant NDV and recombinant NDV expressing African swine fever virus protein 72 in embryonated chicken eggs and chicks.
Figure 6 个
Table 1 个