In a woman of 26, who suffered from a vulvovaginal infection and had previously been treated for Candida vaginitis, Saccharomyces cerevisiae was cultured and identified. At her work she sold baking yeast. Topical treatment with amphotericin B 100 mg suppositories was successful. Microscopic examination (1000 x) of the discharge in saline showed haloed yeast cells. For treatment, oral ketoconazole or topical administration of amphotericin B or clotrimazole, in relatively high doses, may be applied. This yeast might be the cause of 'chronic candidiasis' more often than suspected, notably in women working in a bakery or a brewery.