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Dengue Hemorrhagic Fever (DHF) remains a major public health issue in Indonesia, particularly in endemic areas like Simpang III Sipin Village. This disease is transmitted by Aedes sp mosquitoes, and the presence of their larvae is a key indicator of the potential spread of DHF. Environmental conditions, such as water reservoirs and humidity, alongside community behaviors, play significant roles in supporting the growth of these mosquito larvae. Therefore, research is needed to identify the factors influencing the presence of Aedes sp larvae. Methods: This study utilized a cross-sectional design with a quantitative approach. The sample consisted of 143 households, selected using purposive sampling techniques. Data were collected via questionnaires and direct observations. Additionally, measurements of environmental conditions such as air humidity and temperature were taken using a hygrothermometer. The variables under study included knowledge, attitudes, behavior regarding water reservoir drainage (TPA), number of TPAs, air humidity, and air temperature. Results: Data analysis was conducted using the Chi-Square statistical test to determine the relationships between the variables. The results indicated that factors like knowledge level (p = 0.008), attitude (p = 0.008), behavior related to draining water reservoirs (p = 0.001), number of water reservoirs (p = 0.013), and air humidity (p = 0.004) were significantly related to the presence of Aedes sp larvae. However, air temperature did not show a significant relationship (p = 0.675). Conclusion: High humidity environments encourage the growth of mosquito larvae, and insufficient knowledge and inadequate preventive behaviors contribute to increased mosquito populations, exacerbating the risk of DHF transmission.

Dengue fever remains a serious public health issue at the international and local levels, particularly in Semarang. Dengue fever can be controlled by Wolbachia bacteria, to suppress Aedes Sp. The SMA Labschool UPGRIS Semarang City students have never received instruction on controlling dengue disease using Wolbachia. This activity aims to increase the pupils' understanding of the issue. Powerpoint slides are used to facilitate discussions and the presentation of material during activities. There were 49 students in attendance. The Pre-Post test is used to measure knowledge. The non-parametric Wilcoxon sign rank test was used for a descriptive and analytical analysis of the measurement results. The findings indicate that 42 students' knowledge (85.7%) grew due to exposure. In the pre-test, students' understanding of dengue fever and how to control it using Wolbachia was, 50% complete (mean 50.6), but in the post-test, it was 80% complete (mean 8). The values before and after the test are significantly different (p-value 0.001). The socializing activities can help students learn more about the dynamics of dengue-transmitting mosquitoes and how Wolbachia bacteria can be used to control them. It is essential to create print and internet informational materials regarding dengue illness and how Wolbachia can treat it.