Alcaligenes Faecalis


  • Member of Alcaligenes Genus (Achromobacter Family)
    • First isolated in 1896 by Petruschky from stale beer
    • Motile (flagellated)
    • Slender, slightly-curved
    • Aerobic
    • Non-fermenting, non-encapsulated Gram negative rod
    • Found in gastrointestinal tract as harmless saprophyte in 5-19% of the population

Clinical Manifestations

General Comments

  • Opportunistic Infection
    • Acquired from moist items: nebulizers, ventilators, lavage fluid

Gastrointestinal Manifestations

  • Appendicitis (see Appendicitis, [[Appendicitis]])
  • Enteric Fever
  • Peritonitis: in setting of peritoneal dialysis

Neurologic Manifestations

Other Manifestations


  • The finding of Bact. alcaligenes on blood culture: its significance in 17 unselected cases. Postgrad Med J1958 ;34 :484-8
  • Postpartum bacterium Alcaligenes septicemia with meningeal involvement. J Indian Med Assoc1959 ;33 :513-14
  • Alcaligenes faecalis septicemia. Indian J Pediatr 1983;50:687-9
  • Bacteriological study of an Alcaligenes faecalis strain: a food poisoning epidemic. Indian J Pathol Bacteriol1963;37 :128-33
  • Bacillus Alcaligenes infections. A clinical analysis of 33 cases. Chin Med J (Engl)1963 ;82 :423-31
  • [Bacteremia caused by Alcaligenes (Achromobacter) xylosoxidans. Description of 3 cases and review of the literature]. [in Spanish] Enferm Infecc Microbiol Clin1996;14 :436-40
  • First reported case of Alcaligenes faecalis peritonitis. Perit Dial Int. 2010 Jan-Feb;30(1):118-9. doi: 10.3747/pdi.2009.00058 [MEDLINE]