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*Important member of the enterobacteria
*Important member of the enterobacteria
*Cause disease in humans and animals
*Cause disease in humans and animals
*Oral transmission
*Reservior of infection in poulty, pigs, rodents, cattle, dogs
*Reservior of infection in poulty, pigs, rodents, cattle, dogs
*Cause enteritis and systemic infection (septicaemia and abortion)
*Cause enteritis and systemic infection (septicaemia and abortion)
===Characteristics===
===Characteristics===
*Facultative intracellular pathogens
*Facultative intracellular pathogens
*Non-lactose fermentor
*Non-lactose fermentor
*Utlise citrate as a carbon source
*Utlise citrate as a carbon source
*Usually produce hydrogen sulphide
*Usually produce hydrogen sulphide
===Classification===
*Single species, ''Salmonella enterica''
*Over 2400 pathogenic serotypes or serovars identified
===Pathogenesis===
===Pathogenesis===