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*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)
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*''Salmonella'' may be carried sub-clinically
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*Some human strains cause enteric fever (''S. Typhi'' causes typhoid), also gastroenteritis, septicaemia or bacteraemia
    
===Characteristics===
 
===Characteristics===
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*Single species, ''Salmonella enterica''
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*Over 2400 pathogenic serotypes or serovars identified
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*Facultative intracellular pathogens
 
*Non-lactose fermentor
 
*Non-lactose fermentor
 
*Do not produce urease or indole from tryptophan
 
*Do not produce urease or indole from tryptophan
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