Genotype Diversity of Newcastle Disease Virus in Nigeria: Disease Control Challenges and Future Outlook

Table 4

Genetic distances between the common vaccine strains and the prevalent virulent NDV subgenotypes in Nigeria.

Vaccine	Prevalent subgenotype
	VIg	VIh	VIi	XIVa	XIVb	XVIIa	XVIIb	XVIIIb
B1	0.156	0.155	0.162	0.173	0.185	0.165	0.173	0.16
Komarov	0.155	0.155	0.161	0.169	0.180	0.157	0.165	0.159
Lasota	0.159	0.157	0.166	0.174	0.186	0.165	0.173	0.162
V4	0.147	0.151	0.156	0.165	0.175	0.153	0.16	0.152
VGGA	0.162	0.162	0.169	0.179	0.191	0.17	0.178	0.166
I2	0.145	0.153	0.155	0.163	0.173	0.151	0.149	0.156

The table shows number of base substitutions per site of the complete F gene sequence pairs between vaccine strains and NDV subgenotypes in Nigeria. The analysis involved 126 nucleotide sequences. Codon positions included were 1st+2nd+3rd+Noncoding. All positions containing gaps and missing data were eliminated. Evolutionary analyses were conducted in MEGA6 [28].