- Gram-variable-staining rod, facultative anaerobic bacteria (actually has a Gram-positive cell wall, but because the cell wall is so thin it can appear either Gram-positive or Gram-negative under the microscope).
- Small (1-1.5 µm diameter) non-spore forming, non-motile coccobacilli.
- Previously classified as Haemophilus vaginalis and afterwards as Corynebacterium vaginalis.
- Growth: grows as small, circular, convex, gray colonies on chocolate agar; it also grows on HBT agar.
- Can cause bacterial vaginosis in some women as a result of a disruption in the normal vaginal microflora.
- Typically isolated in genital cultures. May also be detected in other samples from blood, urine, and pharynx.