About 1 billion cases of vector-borne infectious diseases occur every year, of which more than 1 million is dead in worldwide. Japanese encephalitis and malaria continue to occur, and infectious diseases such as dengue fever being imported aborad have been increasing significantly due to the increasing number of overseas travelers in Korea. The Korea Disease Control and Prevention Agency has established local centers to monitor pathogen vector population density related to chimate change at 16 locations. We collected 59,389 mosquitoes in traps at 36 collection sites in 30 urban regions and migratory bird habitats in 2023. The trap index was 34.6, and the predominant mosquito species were the Culex pipiens complex, Aedes albopictus, Armigeres subalbatus, Aedes vexans, and Ochlerotatus Koreacus. The mosquitoes were pooled into 4,371 pools to monitor flavivirus infection. In flavivirus dietection, no virus was detected.

• Hyunwoo Kim(Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency, Cheongju, Korea)
• Byung-Eon Noh(Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency, Cheongju, Korea)
• Sehoon Cho(Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency, Cheongju, Korea)
• Hee Il Lee(Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency, Cheongju, Korea)