Fig. 5

Genetic relatedness of isolates from clinical and water samples across three outbreaks. Each section represents one outbreak. Within a section, the dates of household enrollment, and household IDs are shown. In each column, the genetic lineage is identified by color. Boxes without letters indicate a specific genotype: green = 11–9–7-16-19, orange = 11–9–8-17-20, purple = 10–9–7-19-21, and red = 9–9–7-17-20. The letters slv, dlv and tlv represent single, double and triple locus variants. The numbers represent the number of genotypes. The blue boxes identify genotypes that are unrelated to the clinical genotypes in the same household