Dengue virus belongs to the genus Flavivirus that can be transmitted to humans by the bite of the Aedes aegypti mosquito. Dengue virus infection has a mortality and morbidity rates are fairly high almost throughout the world. Diagnosis has been classified by degree of clinical manifestation according to WHO 1997, confirmed through clinical signs and symptoms and laboratory tests. The aim of this study is to examine the relationship leukocyte count, lymphocyte count, hematocrit and platelet count with a severity degree of dengue virus infections, according to WHO criteria in 1997 in adult patients admitted to the General Hospital Sanglah 2015. This study use cross-sectional analytic study on 90 patients with dengue infection using secondary data. Samples are adult patients with dengue infection aged > 12 years in the medical records contained the results of the leukocyte count, lymphocyte count, hematocrit and platelet count were treated at Sanglah Hospital in Bali on the period January 1 to December 31, 2015. Analysis using PASW Statistics 18 with the Kolmogorov-Smirnov normality then resumed with Pearson correlation test found no siginificant relationship between the number of leukocytes with the lowest degree of severe dengue infection (p = 0.354; r = -0.099), there is no significant relationship between hematocrit value with the highest degree of severe dengue infection (p = 0.293; r = 0.112), and obtained negative relationship weak significant between platelet counts with the lowest degree of severe dengue infection (p = 0.009; r = -, 0275). The results of analysis by Spearman correlation test found no significant relationship between low lymphocyte count with severity of dengue infection (p = 0.636, r = -0.051). Seeing the results, need to do prevention and detection of dengue infection early, so that morbidity and mortality can be reduced. Keywords: Leukocyte count, lymphocyte count, platelet count, hematocrit and severity of dengue infection.
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