AFLP analysis of L. pneumophila serogroup 1 isolates. AFLP analysis shows genomic diversity between a representative subset of 102 L. pneumophila strains used for further analysis in this study. For each strain serogroup type (Sg.) and assigned EWGLI-type are shown. The variety of patterns and presence of several different EWGLI-types indicates the random selection of strains representing the natural genomic diversity within this species.