Table 1.

WHO’s 2009 Dengue Case Classification.3

Severity Symptoms
Dengue Fever Fever and two of the following:
  • Nausea, vomiting
  • Rash
  • Aches and pains
  • Leukopenia
  • Positive tourniquet test
Dengue Fever with Warning Signs Dengue fever as defined above with any of the following:
  • Abdominal pain or tenderness
  • Persistent vomiting
  • Clinical fluid accumulation (ascites, pleural effusion)
  • Mucosal bleeding
  • Lethargy, restlessness
  • Liver enlargement >2 cm
  • Laboratory: increased hematocrit concurrent with rapid decrease in platelet count
Severe Dengue Dengue fever with at least one of the following criteria:
  • Severe plasma leakage leading to shock
  • Fluid accumulation with respiratory distress
  • Severe bleeding as evaluated by clinician
  • Severe organ involvement
    • ○ Liver Enzymes: AST or ALT ≥1000 U/L
    • ○ Central nervous system: impaired consciousness
    • ○ Failure of heart and other organs

ALT, alanine aminotransferase; AST, aspartate aminotransferase.

RMMJ Rambam Maimonides Medical Journal Rambam Health Care Campus 2021 April; 12(2): e0014. ISSN: 2076-9172
Published online 2021 April 29. doi: 10.5041/RMMJ.10436