Dengue Hemorrhagic Fever (DHF) is an infectious disease that remains a public health problem in Indonesia, especially in tropical regions. Elementary school-aged children are among the groups vulnerable to dengue fever transmission, so adequate knowledge regarding early prevention efforts is needed. Schools have an important role as a means of health education to shape dengue fever prevention behavior in students. This study aims to determine the level of knowledge related to dengue fever prevention among students in grades III–VI at SD No. 2 Mekar Bhuana, Abiansemal District. This study used a quantitative descriptive design with a cross-sectional approach. The study population was all 80 students in grades III–VI, with a sample of 67 respondents selected using a purposive sampling technique. Data collection was carried out using a questionnaire regarding the level of knowledge of dengue fever prevention, then analyzed using univariate analysis to determine the frequency distribution and percentage. The results showed that most of the respondents were aged 12 years (32 students (47.8%) and the majority were female (43 students (64.2%). The level of student knowledge regarding dengue fever prevention was dominated by the sufficient category with 44 respondents (65.7%), followed by the good category with 18 respondents (26.9%), and the poor category with 5 respondents (7.5%). It can be concluded that student knowledge regarding dengue fever prevention is already there but is not optimal, so efforts are needed to improve health education in a sustainable and structured manner in the school environment to improve understanding and behavior in dengue fever prevention among elementary school students.

Keywords: Dengue Hemorrhagic Fever, level of knowledge, dengue fever prevention.