Any laboratory confirmation (NS1 and/or IgM) tended to be more likely during the high dengue season (X2[1, N = 150] = 3.68, p = 0.06) and month tended to be a predictor of any laboratory confirmation (X2[8, N = 150] = 15.26, p = 0.05). Here, CD40LG is linked to dengue disease.