From Denki virus infectionFound that during the first days of infection, WBC type granule was found and after 3-4 days, Lymphoid and monocyte increased most atypical lymphocyte Lymphoid and monocyte secrete cytokinas and mediators such as anaphylatoxin C3a, C5a.Resulting in endothelil injury and activation coagulation resulting in DICIf DIC not treatment causes shock and deathendotheliel injury and cytokinas and mediators increased resulting in increased vascular permeraility which causes plasma leakage and Affect shock and deathinfection dengue causes platelet alteration to stimulate circulating immune complex, platelets dysfunction decreased affect bleedindIf bleedind not treatment Affect shock and Deathplatelet alteration, stimulation facter 4and batathromoglobulin to clot activation affect DIC