Molecular Characterization of Newcastle Disease Virus from Backyard Poultry Farms and Live Bird Markets in Kenya

Figure 2

Phylogenetic tree of partial fusion (F) gene nucleotide sequences of the Newcastle disease virus- (NDV-) positive study samples () and GenBank references. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) is shown next to the branches (only >50% is shown). The evolutionary history was inferred by using the maximum likelihood method based on the Kimura 2-parameter model. The gamma correction for rate heterogeneity was 0.4292. The analysis involved 111 nucleotide sequences. The tree is rooted using the NDV sequence belonging to Class I. There were a total of 521 positions in the final dataset. Evolutionary analyses were conducted in MEGA 6 [31].