Isolation of Moellerella wisconsensis from a Biliary Sample in a Patient with Acute Cholecystitis

Moellerella wisconsensis is a species of the family Enterobacteriaceae previously called Enteric Group 46 (1). This organism was first isolated in 1980 from an adult subject with gastroenteritis. Since then, isolations from human clinical samples have been reported infrequently for, e.g., stool specimens (2), bronchial aspirate (3), and an infected gallbladder (4). Its role as a pathogen is unclear. We describe a case of isolation of M. wisconsensis from the bile of an elderly diabetic woman with acute cholecystitis.