(2) Dengue severity and AST/ALT values Median AST and ALT values for dengue without warning signs, dengue with warning signs, and severe dengue (Table 1) In other hemorrhagic fevers, higher AST:ALT ratios correlated with disease fatality [20] . In our PCR-positive cohort, median AST:ALT ratios for DF, DHF, and DSS were 1.68, 1.68, and 1.88 (p = 0.29) and for dengue without WS, dengue with WS, and severe dengue, they were 1.60, 1.68, and 1.78 (p = 0.10), respectively.