Public health weekly report · 2026
Surveillance of Tick Distribution and Infection Rates of Tick-borne Infectious Diseases in Gyeongsangbuk-do Province and Daegu Metropolitan City in 2025.
СтатьяНазвание и аннотация: Перевод в очереди
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Ha Young-Ran, Kim Myung Jin, Yun Hye Keun, Jeong Hye Jin, Kwon Mirim, Park Yuna, Jo Jeong Ok, Lee Yong-Pyo, Moon Gyeong Ran, Gu Bomin, Chun Jeong-Hoon
Аннотация
OBJECTIVES: Hard ticks transmit fatal diseases such as severe fever with thrombocytopenia syndrome (SFTS) and Lyme disease, with recurring risks reported in the Gyeongsangbuk-do and Daegu regions. This study investigated tick occurrence to establish a vector-focused surveillance system aimed at preemptively preventing infectious disease transmission in these areas.
METHODS: From April to November 2025, the Gyeongbuk Regional Center for Disease Control and Prevention, in collaboration with the Daegu and Gyeongsangbuk-do Institutes of Health and Environment, chose five surveillance sites within the region. This study screened for seven tick-borne pathogens, encompassing SFTS, and calculated the minimum infection rate across various environments.
RESULTS: A total of 6,874 ticks (3 genera and 4 species) were collected, including 3,563 adults/nymphs and 3,311 larvae. Haemaphysalis longicornis was the dominant species, accounting for 96.2% (3,428) of adults and nymphs. Among the 6,306 specimens (618 pools) tested, four of the seven pathogens (Borrelia spp., Anaplasma phagocytophilum, Ehrlichia spp., and Rickettsia spp.) were detected in 465 pools (5,701 individuals), leading to a 7.4% minimum infection rate.
CONCLUSIONS: This study verifies the dominance of specific hard tick species and the presence of diverse pathogens in the Gyeongsangbuk-do and Daegu regions, underscoring the need for continuous surveillance. These results are anticipated to contribute to the establishment of an effective community-level response system for infectious diseases by faciliting continuous monitoring tailored to regional characteristics and by building long-term surveillance systems associated with environmental changes and human infection cases.
METHODS: From April to November 2025, the Gyeongbuk Regional Center for Disease Control and Prevention, in collaboration with the Daegu and Gyeongsangbuk-do Institutes of Health and Environment, chose five surveillance sites within the region. This study screened for seven tick-borne pathogens, encompassing SFTS, and calculated the minimum infection rate across various environments.
RESULTS: A total of 6,874 ticks (3 genera and 4 species) were collected, including 3,563 adults/nymphs and 3,311 larvae. Haemaphysalis longicornis was the dominant species, accounting for 96.2% (3,428) of adults and nymphs. Among the 6,306 specimens (618 pools) tested, four of the seven pathogens (Borrelia spp., Anaplasma phagocytophilum, Ehrlichia spp., and Rickettsia spp.) were detected in 465 pools (5,701 individuals), leading to a 7.4% minimum infection rate.
CONCLUSIONS: This study verifies the dominance of specific hard tick species and the presence of diverse pathogens in the Gyeongsangbuk-do and Daegu regions, underscoring the need for continuous surveillance. These results are anticipated to contribute to the establishment of an effective community-level response system for infectious diseases by faciliting continuous monitoring tailored to regional characteristics and by building long-term surveillance systems associated with environmental changes and human infection cases.