NCIt definition : A species of facultatively anaerobic, gram negative, rod shaped bacteria assigned
to the phylum Proteobacteria. This species is motile by peritrichous flagella, oxidase
negative, catalase positive, grows in KCN medium, and successfully ferment sucrose,
raffinose and melibiose. C. freundii is most commonly found in water, sewage, soil
and food and is an opportunistic pathogen in neonates and immunocompromised patients.;
Alternative definition : CDISC: Any bacterial organism that can be assigned to the species Citrobacter freundii.;