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Late listeriosis after fludarabine plus prednisone treatment

SUMMARY. Fludarabine plus prednisome treatment in patients with chronic lymphocytic leukaemia has recently been correlated with an increased incidence of Listeria monocytogenes infections. We observed a patient with chronic lymphocytic leukaemia who received fludarabine plus prednisone and developed a fatal listeriosis 7 months later. A further case of listeriosis has recently been described in a man who developed the infection 2 years after successful fludarabine treatment while he had a normal CD4 lymphocyte count. These cases suggest that the risk period for the development of such an unusual infection could be unexpectedly and unpredictably long. This data could be important in the evaluation of a possible antibacterial prophylaxis schedule and in the wariness about the potential danger of food known to contain L. monocytogenes.