Bacterial Vaginosis (BV) By Oluwatosin Goje, MD, MSCR, Cleveland Clinic, Lerner College of Medicine of Case Western Reserve University Reviewed / Revised Mar 2023 View Patient Education Symptoms and Signs Diagnosis Treatment Topic Resources Speculum Examination in Bacterial... Clue Cells Bacterial vaginosis is a dysbiosis, a complex alteration of vaginal flora, in which lactobacilli decrease and anaerobic pathogens overgrow.