Salmonella
General description
Salmonella spp. belong to the family Enterobacteriaceae. They are motile, Gramnegative
bacilli that do not ferment lactose, but most produce hydrogen sulfi de or
gas from carbohydrate fermentation. Originally, they were grouped into more than
2000 species (serotypes) according to their somatic (O) and fl agellar (H) antigens
(Kauffmann-White classifi cation).