PIP: Yeast infections are of primary importance in genital pathology; the most common, but by no means the sole pathogen, is Candida albicans. The incidence of yeast infections is seasonal in nonpregnant women, while in pregnant women it rises markedly during the third trimester. This is the main source of infection for oral candidosis of the newborn. Incidence is also increased in women treated with oral contraceptives. Yeast infections also occur in men, and seem to be encouraged by the use of antibiotics. Antimycotic drugs of great efficiency have been developed recently, but positive identification of the pathogen is a prerequisite to effective therapy.