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Scientific classification
Kingdom: Bacteria
Phylum: Bacteroidetes
Class: Flavobacteria
Order: Flavobacteriales
Family: Flavobacteriaceae
Kämpfer et al. 2006
Type species
Wautersiella falsenii

Wautersiella falsenii

Wautersiella is a genus of bacteria most closely related to Empedobacter brevis in the family Flavobacteriaceae and the order Flavobacteriales. Originally described in 2006 by Kämpfer et al. based on 26 clinical isolates from Belgium that shared 94-95% homology after 16S ribosomal RNA sequencing. The species described was named Wautersiella falsenii in honor of contemporary microbiologists Belgian Georges Wauters and Norwegian Enevold Falsen.

Flavobacteriaceae Family of bacteria

The family Flavobacteriaceae is composed of environmental bacteria. Most species are aerobic, while some are microaerobic to anaerobic; for example Ornithobacterium, Capnocytophaga, and Coenonia.

Flavobacteriales Order of bacteria

The order Flavobacteriales comprises three families of environmental bacteria.

Belgium Federal constitutional monarchy in Western Europe

Belgium, officially the Kingdom of Belgium, is a country in Western Europe. It is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to the southwest, and the North Sea to the northwest. It covers an area of 30,688 square kilometres (11,849 sq mi) and has a population of more than 11.4 million. The capital and largest city is Brussels; other major cities are Antwerp, Ghent, Charleroi and Liège.



Wautersiella falsenii is an aerobic, Gram-negative, non-lactose fermenting, non-motile, oxidase-, urease- and catalase-positive, organism 2–3 um in length. The notable distinction between Wautersiella falsenii and Empedobacter brevis is that the latter is urease negative. [1]

Clinical significance

This organism has been isolated from clinical specimens, including blood, respiratory samples, wounds, pleural fluid [1] and the urinary tract. [2] though it is an extremely rare cause of nosocomial infection, it may be significant resistant to many antibiotics, including carbapenems. Recently, it has been found in the context of patient surveillance for carbapenem-resistant organisms with CHROMagar KPC. [3]

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  1. 1 2 Kämpfer, P; Avesani V; Janssens M; Charlier J; De Baere T; Vaneechoutte M (2006). "Description of Wautersiella falsenii gen. nov., sp. nov., to accommodate clinical isolates phenotypically resembling members of the genera Chryseobacterium and Empedobacter". Int J Syst Evol Microbiol. 56 (10): 2323–9. doi:10.1099/ijs.0.64393-0.
  2. van der Velden, LB; de Jong AS; de Jong H; de Gier RP; Rentenaar RJ (December 2012). "First report of a Wautersiella falsenii isolated from the urine of an infant with pyelonephritis". Diagn Microbiol Infect Dis. 74 (4): 404–5. doi:10.1016/j.diagmicrobio.2012.08.008. PMID   22999333.
  3. Venkatachalam, I; Teo J; Balm MN; Fisher DA; Jureen R; Lin RT (August 2012). "Klebsiella pneumoniae Carbapenemase-producing enterobacteria in hospital, Singapore". Emerg Infect Dis. 18 (8): 1381–3. doi:10.3201/eid1808.110893. PMC   3414009 Lock-green.svg. PMID   22840461.