TABLE 5.

Deduced fusion cleavage site amino acid motifs (positions 110 to 117) for NDV isolates from WS and LBM samples by class and genotype (n = 290)

Fusion cleavage site motif	No. of isolatesa
	Class I genotype:									Class II genotype			Total
	1	2	3	4	5	6	7	8	9	I	Ia	IIa
EGERQERL			5*										5
GGEQQERL			6*										6
GGERQDRL					16		1						17
GGERQERL	12	11	10*	13	59	1	46	6 (1*)	24				183
GGERQGRL						1							1
GGVRQERL							2						2
EGGKQGRL											4		4
GGEKQGRL												46	46
GGGKQGRL										8	5	8	21
GVEKQGRL												1	1
RGGKQGRL												4	4
Total	12	11	21*	13	75	2	49	6 (1*)	24	8	9	59	290

^aAsterisks denote non-U.S. isolates.