2025년 국내 일본뇌염 매개모기 감시 결과

Objectives: , with approximately 10-20 human cases reported annually in the Republic of Korea (ROK). The Korea Disease Control and Prevention Agency conducts annual surveillance to monitor vector mosquito occurrence and trends. This study aimed to evaluate the seasonal occurrence and regional distribution patterns of JE vector mosquitoes based on 2025 surveillance data. Methods: abundance. In addition, genetic analysis was performed to detect the JE virus in mosquito samples. Results: was concentrated between July and September, with a peak in the 36th week. Southern regions showed earlier emergence and higher densities, whereas northern regions showed delayed emergence and lower densities. Conclusions: decreased by 34.8% compared to the previous year and by 9.1% relative to the 2022-2024 average year. This reduction was likely associated with climatic conditions, including a higher-than-normal summer mean temperature (25.7°C; +2.0°C above normal) and heavy rainfall in mid-July (200-700 mm), which may have affected mosquito survival and breeding. Continuous and high-resolution surveillance is essential for effective JE prevention, particularly in the context of climate change.