The authors present the results of therapy in 26 cases of fungal septicemia occurring in a 2,471 patients population with 169 septicemia, over a 9 year period in a surgical intensive care service. An analysis of the etiology, clinical and paraclinical factors confirms the notions classically described in the literature. Three points are particularly insisted upon: 1) The effectiveness of preventive measures; 2) The monitoring of the therapy and its tolerance by means of a simple protocol; 3) The eventual possibility of an haematologic toxicity by flucytosine, the primary and secondary resistances to this anti-fungal agent. The strict application of preventive measures seems to reduce the incidence of fungal septicemia but not to eradicate them. The prognosis of these states remains grave.