Pneumonia due to Legionella pneumophila: the first imported case in Finland.

The first imported case of legionnaires' disease in Finland is reported. A 64-year-old woman fell ill 1 day after returning from a holiday in mallorca. Chest film revealed a bronchopneumonic infiltrate; however, the patient had no respiratory symptoms at all during her illness. The course of disease was benign, possibly due to early onset of treatment with erythromycin.