Phylogenetic analysis and reconstruction of genetic tree based on partial S-gene segment generated through Kimura-2 parameter using the Neighbor Joining model. Horizontal branch lengths represent number of nucleotide differences between taxa (individual virus sequence). Number at the nodes indicates bootstrap values shown above 50 to demonstrate the robustness of grouping using 1000 datasets replicas. Viruses from 7 genogroups (Asia-1, Asia-2, Euro-1, Euro-2, Africa-1, Africa-2 and Africa-3) are represented. Asia 1 genogroup constitutes viruses previously reported from Pakistan, Afghanistan, Iran, UAE, Madagascar and Iraq. The dark squares represent viruses from this study while open circles indicate viruses detected from Pakistan in previous years.