Survival of multiple Caenorhabditis nematodes fed Legionella. (A) Kaplan-Meier survival plot of C. elegans AB1 (squares, n=30), C. briggsae HK104 (circles, n=31), C. elegans N2 (triangles, n=30), C. elegans CB4555 (inverted triangles, n=24), C. elegans RC301 (diamonds, n=15), and C. elegans CB4856 (asterisks, n=26) fed L. pneumophila Philadelphia-1 type strain. (B) Kaplan-Meier survival plot of C. elegans AB1 (squares, n=26), C. briggsae HK104 (circles, n=27), C. elegans N2 (triangles, n=29), C. elegans CB4555 (inverted triangles, n=25), C. elegans RC301 (diamonds, n=30), and C. elegans CB4856 (asterisks, n=29) fed L. longbeachae ATCC 33462. P ≤ 0.0002 by pairwise comparison by the log-rank test of each of the nematode strains (HK104 and CB4555) versus wild-type N2 for both Legionella strains. All other nematode strain pairwise comparisons versus wild-type N2 were found to be statistically insignificant. Data is representative of one of three independent experiments.