Human immunodeficiency virus ( HIV ) - negative women @-@ years old with @ or more vaginal infections , including bacterial vaginosis ( BV ) , vulvovaginal candidiasis ( VVC ) , or Trichomonas vaginalis ( TV ) , were randomly assigned to receive vaginal suppositories containing metronidazole @ mg plus miconazole @ mg or matching placebo for @ consecutive nights each month for @ months .