Dengue fever frequently presents with non specific sy mptoms, making it difficult to be distinguished from other acute febrile illnesses, including leptospi rosis. Given this, serum samples from 82 patients with clinical features of dengue-like illness were ev aluated for dengue infection by IgM-enzyme-linked immunosorbent assay (ELISA) and reverse transcription-polymerase chain reaction (RT-PCR). Negative samp...