his means that they all belong to the genus Salmonella, a division that groups similar, though not identical bacteria together. These bacteria are named after the scientist who discovered them, Dr. Daniel Salmon. The majority of the components of these bacteria are identical, and at the DNA level, they are between 95% and 99% identical. (As a comparison E. coli and Salmonella, which are closely related to each other, are about 60-70% identical at the DNA level).