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Many factors are responsible for high incidence of dengue hemorrhagic fever (DHF). Moreover, the existence of Aedes mosquitoes plays a role in DHF transmission and larval indices was used as indicators to monitor Aedes populations. The present study determined the influence of socio-cultural, environmental factor and larvae density on DHF transmission. This study was carried out in Medan, a high incidence district and Langkat, a low incidence district. Larva survey was conducted to determine larval density. The influence of socio-cultural, environmental factors and Aedes larvae density on DHF transmission was examined by Multiple Logistic Regression. The result showed that number of family members, frequency cleaning of water container and House index (HI) were the significant factors for DHF transmission in North Sumatera Province. Sociocultural factor and larval density have been proven to significantly influence DHF transmission in North Sumatera Province. Both district have HI value higher than 10, which indicated have a high risk area for DHF transmission. Based on these findings, it was recommended to enhance health promotion regarding dengue prevention in the community. Furthermore, Aedes monitoring activity should be intensified to strengthen the dengue control program in North Sumatera Province. Keywords— Socio-cultural, environmental, Aedes larvae density,

The influence of sociocultural, environmental factor and Aedes larvae density on transmission of dengue hemorrhagic fever in North Sumatera Province