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Concurrent infection with dengue virus type-2 and DENV-3 in a patient from Ceará, Brazil Fernanda Montenegro de Carvalho Araújo; Rita Maria Ribeiro Nogueira; Josélio Maria Galvão de Araújo; Izabel Letícia Cavalcante Ramalho; Maria Lucia Feitosa de Sá Roriz; Maria Elizabeth Lisboa de Melo & Ivo Castelo Branco Coelho Abstract 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. Keywords dengue - concurrent infection - DEN2 - DENV-3 - Ceará - Brazil

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