Escherichia hermannii

**Semantic type:** Bacterium

**Definition:** A species of facultatively anaerobic, Gram negative, rod shaped bacterium assigned to the phylum Proteobacteria. This species is motile, produces yellow pigment, ferments glucose, arabinose, mannitol, and rhamnose and is positive for ornithine decarboxylase and indole production. Negative reactions for lactose, melibiose, and sorbitol fermentation, arginine dihydrolase, H2S and urease production, lysine decarboxylase, and citrate. Most commonly isolated from environmental sources like drinking water distribution systems.

**Synonyms:** - CDC Enteric Group 11 - CDC Enteric Group 11 - ESCHERICHIA HERMANNII