- Introduction to Gram-Negative Bacilli
- Overview of Bartonella Infections
- Cat-Scratch Disease
- Oroya Fever and Verruga Peruana
- Bacillary Angiomatosis
- Trench Fever
- Brucellosis
- Campylobacter Infections
- Cholera
- Noncholera Vibrio Infections
- Escherichia coli Infections
- Infection by Escherichia coli O157:H7 and Other Enterohemorrhagic E. coli (EHEC)
- Haemophilus Infections
- HACEK Infections
- Klebsiella, Enterobacter, and Serratia Infections
- Legionella Infections
- Melioidosis
- Pertussis
- Plague and Other Yersinia Infections
- Proteeae Infections
- Pseudomonas and Related Infections
- Overview of Salmonella Infections
- Typhoid Fever
- Nontyphoidal Salmonella Infections
- Shigellosis
- Tularemia
The genus Salmonella is divided into 2 species, S. enterica and S. bongori, which include > 2500 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:
Those highly adapted to humans and having no nonhuman hosts: This group includes S. Typhi and S. Paratyphi types A, B (also called S. Schottmülleri), and C (also called S. Hirschfeldii), which are pathogenic only in humans and commonly cause enteric (typhoid) fever.
Those adapted to nonhuman hosts or causing disease almost exclusively in animals: Some strains within this group—S. Dublin (cattle), S. Arizonae (reptiles), and S. Choleraesuis (swine)—also cause disease in humans.
Those with a broad host range: This group includes > 2000 serotypes (eg, S. Enteritidis, S. Typhimurium) that cause salmonella gastroenteritis and account for 85% of all Salmonella infections in the United States.
