Fig. 2

P. aeruginosa virulence towards adult C. elegans worms. a Survival curves of adult C. elegans worms exposed to the studied collection of 52 P. aeruginosa strains. b Median survival of adult C. elegans worms exposed to the studied collection of P. aeruginosa strains (in days with 95% confidence interval, C.I.). The source of the strains is categorized as clinical (colored red) or environmental (colored green). The E. coli strain HB101 is included as comparative control and is colored blue. c Phylogenetic distribution of virulence. The virulence of each isolate (i.e., median worm survival in days) is indicated by a bar with length proportional to its value and colored in a gradient, as indicated by the heatmap legend (virulence values in days)