The author describes a case of dengue fever which was notified according to the appendix of regulation 290/1995 chapter V, item 3 as occupational disease. A 33-year-old geologist-operator working during a geological survey in the region of pluvial forests in Cameroon developed dengue fever after his return. In the clinical picture slight haemorrhagic manifestations dominated – epistaxis, thrombocytopenia and transient elevation of aminotransferases. Following symptomatic treatment after four months normalization of the clinical and laboratory finding was achieved and the patient was subjectively free of complaints.

        Key words: denque fever, occupational diseases, travel medicine, bioterrorism