Fig. 1
From: Analysis of coevolution in nonstructural proteins of chikungunya virus
Phylogenetic analysis of nsPs. Total 209 nsP sequences (14 of CHIKV Delhi samples and 195 available in public domain) were aligned using MEGA 6.0 software to construct phylogenetic tree based on Neighbor-joining algorithm and Poisson distribution distance model. Bootstrap values were kept 1500 to ensure reliability. a Phylogenetic analysis of the Delhi sequences was done and its placement in CHIKV genotype group was determined. b Inset of ECSA clade. All samples used for the study belonged to the ECSA clade. 
: represent samples from Delhi region and 
: represents S27- African Prototype used as control for the study