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Table 1 Summary of diagnostic parameters associated with avian avulavirus

From: A review of virulent Newcastle disease viruses in the United States and the role of wild birds in viral persistence and spread

Diagnostic tool Velogenic strains Mesogenic strains Lentogenic strains
Mean death time < 60 h 60–90 h > 90 h
Intracerebral pathogenicity index 1.5–2 1–1.5 0.0–0.5
Intravenous pathogenicity index 2.0–3.0 0–0.5 0.0