Pathogenic potential of Gardnerella vaginalis on the female urogenital system.

The prevalence of certain characteristics of genital discharge like (a) watery variety in sexually transmitted disease (STD) clinic 34% and in gynaecology clinic 26.6%, (b) fishy odour in STD clinic 29.2% and in gynaecology clinic 12.2% and (c) pH > 4.5 in STD clinic 53.6% and in gynaecology clinic 43% was notable. On the other hand, occurrence of "clue cells" (in STD clinic 41.4% and in gynaecology clinic 39.5%) did not show difference in the aforesaid clinics. The preponderance of watery discharge in the STD clinic appears to be related to G vaginalis (in STD clinic 26.8% and in gynaecology clinic 9.3%). It is intriguing to note that G vaginalis was isolated from leucorrhoea (in STD clinic 19.5% and in gynaecology clinic 9.3%) and inapparent (in 10%) cases and normal (in 4.2%) cases. Single infection with G vaginalis in one particular case had profuse watery discharge, pH > 4.5 and there was occurrence of "clue cells". Likewise, in multiple infections revealing G vaginalis (29 cases) as one of the potential agents, 78.5% had profuse, 53.8% watery discharge of which 53.5% had "clue cells" and 81% had pH > 4.5. In mixed type of infections, the U urealyticum (53.8%) and M hominis (30.6%) were conspicuous in bacterial vaginosis. Cervicitis, erosion cervix or urethral syndrome were unrelated to G vaginalis. All cases of G vaginalis infection responded to metronidazole with remission of leucorrhoea in 25.9% cases.