Abstract Dengue Hemorrhagic Fever (DHF) is public health problem in Indonesia and causes extraordinary event with high mortality rate. It is caused by Dengue virus infection of the genus Flavivirirus transmitted by Aedes aegypti bite. All regions in Indonesia are risky for contracting DHF because the virus and the mosquitoes have spread widely in residential housing and public places ... https://spencertifieders.shop/product-category/electronic-oscillators/