Infectious Disease Compendium

Citrobacter

Microbiology

A gram negative rod includes C. amalonaticus, C. diversus, and C. freundii.

Epidemiologic Risks

Bowel organism.

Syndromes

Nosocomial bacteremia, pneumonia and UTI.

Treatment

Aminoglycosides, carbapenems, quinolones, aztreonam.

Notes

Beta-lactamase inhibitor combinations do not work well in vivo even if sensitive in vitro.