Concurrent infection with dengue virus type-2 and DENV-3 in a patient from Ceará, Brazil

dengue outbreaks have occurred in several regions in brazil and cocirculating dengue virus type 1 (denv-1), denv-2, and denv-3 have been frequently observed. dual infection by denv-2 and denv-3 was identified by type-specific indirect immunofluorescence assay and confirmed by reverse transcription polymerase chain reaction in a patient in ceará with a mild disease. this is the first documented case of simultaneous infection with denv-2 and denv-3 in brazil. sequencing confirmed denv-2 and denv-3 (south-east/american) genotype iii and (srilanka/india), genotype iii respectively.