<unk>  is a species of gram-negative bacteria.<unk>  has a commensal relationship within the intestinal tracts of humans, mammals, and reptiles as normal flora.<unk> , is a member of the tribe Proteeae (normal fecal flora that often causes infection in patients whose normal flora have been disturbed by antibiotic therapy of the family Enterobacteriaceae, with two subspecies:<unk>  and M. sibonii. Although<unk>  has a wide distribution, it is considered an uncommon cause of community-acquired infection and it is most often encountered in postoperative and other nosocomial infections such as urinary tract infections.
Morganella morganii
Salmonella enterica
Salmonella bongori
Shigella dysenteriae
Salmonella enteritidis
Escherichia coli O157:H7
Vibrio cholerae
Balantidium coli