K. oxytoca is a commensal bacteria normally found in the gut and respiratory tract of humans, however is an emerging pathogen.
GBS can harmlessly inhabit the vagina, sometimes causing infections and unpleasant symptoms, though this remains controversial between practitioners.
Prevotella amnii has been isolated from the endometrial lining of the uterus, and in women with pelvic inflammatory disease (PID), and bacterial vaginosis.