Biological Pathotyping of Newcastle Disease Viruses in Sudan 2008–2013

Table 4

The ICPI values and the MDT produced by the NDV isolates.

NDV isolate	MTD^* (hours)	ICPI	Pathotype based on ICPI^**
LNy/08	NT	1.3	Mesogenic
LNy/09	76.8	1.2	Mesogenic
Pkam/09	62.4	1.3	Mesogenic
Pmed/010	48	1.8	Velogenic
Bhalf/011	51	2.0	Velogenic
Bso/013	57	1.6	Velogenic
Lkab/013	54	1.6	Velogenic

MDT: mean death time, measured in hours to death; ^**ICPI: intracerebral pathogenicity index, based on an average score of clinical signs over time.