CD40LG and dengue disease: On the other hand all samples tested using Real time PCR were negative for other arboviruses using In-House ELISA protocol for IgM detection from Institute Pasteur of Dakar, which is WHO reference laboratory for Arbo viruses and hemorrhagic fever viruses (Dengue fever, West Nile, Zika viruses, Rift Valley Fever, Crimean-Congo Hemorrhagic Fever and Chikungunya).