Classification Kingdom: Bacteria Phylum: Proteobacteria Class: Gamma Proteobacteria Order: Enterobacteriales Family: Enterobacteriaceae Genus: Shigella Type species:  S. dysenteriae   Definition of Shigella: They are fermentative, facultative anaerobic non spore forming gram negative bacilli, non motile, catalase positive (except Shigella dysentriae type 1), oxidase negative, do not produce gas form carbohydrates with few exceptions. None forms […]