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Time from first symptoms to DENV test results. The times between the first symptoms and the blood samplings were known for 37 DENV-positive patients in prospective subset B. There was a significant difference between PCR-positive and PCR-negative samples (P = 0.0002; Mann-Whitney U test) as well as between IgM-negative and IgM-positive samples (P = 0.015; Mann-Whitney U test). The median is indicated by a solid bar. The whiskers show the IQR.
