CD40LG and dengue disease: Although DENV IgM in DF cases was directed against DENV NS1 and/or DENV WV, there were IgM responses to other flavivirus antigens in some DF patients, leading to possible misinterpretation in singleplex assays, to TBE WV (D1, D3, D32, D40, D45, D46, D55, D59), ZIKV NS1 (D56, D68), and to YFV NS1 (D2, D62).