Blood examinations 8 days after discharge and 20 days after beginning of the symptoms showed a positive serology for Dengue: Dengue-IgG was higher than 200.00 RU/ml (< 22 RU/ml) and the Index to Dengue-IgM was 2,12 (Index >/= 1.1), confirming Dengue-Infection. Here, CD40LG is linked to dengue disease.