Fig 6. Phylogenetic analysis of the nucleotide sequences from the amplified products of NDV fusion genes (521 bp) for commercial and backyard chickens.

A phylogenetic tree was constructed using a maximum likelihood in the IQTree with 1000 bootstrap replicates. The tree was viewed using Fig Tree V 1.4.4. NDV strains are represented in colors based on their detection source- commercial chickens (Blue), backyard chickens (green), vaccine strains (red) and the outbreak strain (brown).