The name Varibaculum comes from two Latin words: "varus" (bent) and "baculum" (small rod). The genus Varibaculum has only one species V. cambriense, a Gram-positive, anaerobic bacterium. The organism was described by Hall et al. in 2003. Only 15 strains have been identified so far which were isolated from intrauterine devices, human vagina, and abscesses, although its natural habitat remains unknown. Recent studies have confirmed that this bacterium is a potential pathogen in skin and soft tissue infections. 1,2.

Varibaculum cambriense is an anaerobic, gram-positive, diphtheroid bacterium that causes abscesses, including sites such as brain, ear, cheek, jaw, breast, and the ischiorectal area, but there were also infections of the female genital tract.3.

Recently, a new species of Varibaculum Varibaculum massiliense was isolated from urine sample of a 59-year-old man with end-stage renal disease.3

Classification: Bacteria > Actinobacteria > Actinobacteridae > Actinomycetales > Actinomycineae > Actinomycetaceae > Varibaculum


  1. Martin Dworkin. The Prokaryotes: Archaea. Bacteria: Firmicutes, Actinomycetes
  2. Varibaculum cambriense Infections in Hong Kong, China, 2006
  3. Actinomyces and Related Organisms in Human Infections. Eija Könönencorresponding authora,b,* and William G. Wadec,* Clin Microbiol Revv.28(2); 2015 Apr
  4. “Varibaculum massiliense” sp. nov., a new bacterial species isolated from human urine. S.E.-H. Brahimi,1,3 S. Khelaifia,1 D. Raoult,1 and V. Moal1,2,∗ New Microbes New Infectv.13; 2016 Sep

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