The genus Salmonella is divided into 2 species, S. enterica and S. bongori, which include > 2400 known serotypes. Some of these serotypes are named. In such cases, common usage sometimes shortens the scientific name to include only the genus and serotype; for example, S. enterica, subspecies enterica, serotype Typhi is shortened to Salmonella Typhi.
Salmonella may also be divided into 3 groups based on how well the organism is adapted to human hosts:
Last full review/revision February 2014 by Larry M. Bush, MD; Maria T. Perez, MD
Content last modified March 2014