Demographic characteristics of the study population and clinical course of the patients with dengue.

DF, dengue fever; DF/WS, DF with warning signs; AST, aspartate aminotransferase; ALT, alanine aminotransferase; nd, not determined.aDays from symptom onset until the interview;bprimary infection was defined as IgM antibody level >1.0 and IgG/IgM antibody ratio 1.0 and IgG/IgM antibody ratio >1.0 or IgM antibody level 1.0.cincludes skin haemorrhages, epistaxis, gingival bleeding, gastrointestinal bleeding, urinary tract haemorrhage or metrorrhagia;dsigns of vascular leakage (pleural or pericardial effusion, ascites);epulse pressure *p≤0.05 vs. Controls;†p≤0.05 vs. DF;‡p≤0.05 vs. DF/WS. Statistical differences were assessed by Mann-Whitney U test.