what does gardnerella vaginalis
Gardnerella vaginalis is the specific type of bacteria strain that causes a vaginal infection on the female genital tract, called bacterial vaginosis or simply, BV.The bacteria is usually harmless, however when they start to multiply, they may cause some serious health symptoms.lthough gardnerella vaginalis is not an STD, it generally occurs in sexually active women, and does not affect men. Causes. Bacterial vaginosis occurs when the balance between the good bacteria that protects the vagina, and the harmful bacteria gets disrupted. This may happen during sexual contact.