Veillonella

How to Subscribe
MLS & MLT Comprehensive CE Package
Includes 185 CE courses, most popular		$109Add to cart
Pick Your Courses
Up to 8 CE hours		$55Add to cart
Individual course$25Add to cart
The page below is a sample from the LabCE course Medically Important Anaerobes. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

Learn more about Medically Important Anaerobes (online CE course)
Veillonella

Significant Veillonella species include:
  • V. atypica
  • V. dispar
  • V. parvula - most commonly isolated
Things to remember:
  • Most commonly implicated in osteomyelitis, prosthetic joint infection, bacteremia, and endocarditis. May cause a virulent and disseminated infection.
  • Treatment may be difficult because this cocci is resistant to vancomycin.
  • Veillonella spp. have been commonly described as contaminants, and are associated with mixed infections.
  • Veillonella spp. are a common, mainly harmless colonizing bacteria in humans, found in the intestines, oral mucosa, and vaginal tract.
  • Blood agar morphology: Small, gray/white, smooth, opaque, almost transparent (appearing a bit like Neisseria on a blood agar plate). Refer to the Erasmus University Medical Center Rotterdam website for further images and additional information.12
12. University of Rotterdam. Erasmus MC: Bacteria: Veillonella. University Medical Center Rotterdam Website. No date. Available at: https://microbe-canvas.com/Bacteria/aerobic-gram-negative-cocci/veionella-parvula.html.
Figure 32. Centers for Disease Control and Prevention. (1972). Under a magnification of 1125X, this photomicrograph revealed the presence of numerous, Gram-negative, anaerobic, Veillonella sp. bacteria. [Image]. https://phil.cdc.gov/Details.aspx?pid=10776.

Figure 32. Gram-negative Veillonella bacteria (1000x magnification)