Sensitivity Study of Diagnostic for Early Detection of Dengue Infection

Inclusion Criteria: * All age groups and both sexes. * Initial serum samples must be collected within 1- 7 days of onset of symptoms consistent with Dengue virus infection. * Information must be available about symptoms, age, and sex of patient from which samples are collected. * The location of sample collection must be recorded. * Archived samples that have been sent to reference labs for dengue or flavivirus testing should be considered for inclusion as test specimens in this study. If these specimens are included in this study, then they must have a documented history that the specimen was obtained within the first 7 days of onset of subject symptoms consistent with dengue infection. Exclusion Criteria: * Archived samples with linked personal identifiers or any sample for which personal information can be discovered. * Prospective samples from nursing home residents; inmates/subjects in police custody; participants who are unable to understand verbal or written local language in which a certified translation of the informed consent is available, or requires a Legal Authorized Representative (LAR) for consent. * Subject serum specimens that have undergone more than 2 freeze-thaw cycles or that have not been stored frozen.