Citrobacter

Background

Microbiology

• Genus of Gram-negative bacilli
• Species of medical importance include Citrobacter freundii and Citrobacter koseri

Management

• Usually assumed to have an inducible AmpC β-lactamase, with the exception of Citrobacter koseri, Citrobacter amalonaticus, Citrobacter farmeri, and Citrobacter sedlakii