CD40LG and dengue disease: At the 11th day post-onset of symptoms, a blood sample was sent to the Center for Virology for PCR and serology testing for tropical infectious diseases (chikungunya IgM, IgG and PCR, dengue hemagglutination inhibition assay, and Zika virus IgM and neutralization assay: all negative), as well as for SARS-CoV-2-specific serology.