Abstract
Dengue viruses (DEN) are increasingly becoming endemic and epidemic in tropical and subtropical countries. In this study, 17 serologically confirmed clinical cases of DEN infection diagnosed in German tourists over the period from May 1993 until May 1994 are presented. Thirteen out of 17 (76.5%) infections occurred in southeast Asia (Thailand 58.9%), and 4/17 (23.5%) in Central and South America. All sera screened by means of the indirect immunofluorescence assay (IIFA) were positive for anti-DEN IgM. Acute infection was confirmed by demonstrating anti-DEN IgM using a "mu-capture assay". Sixteen out of 17 (94.1%) of patients presenting with fever upon admission were positive for anti-DEN IgG, with titres of > or = 128 in the IIFA. This report indicates the rising significance of DEN as a travel-associated infection in German tourists.
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