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KMID : 1143420230160321119
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Public Health Weekly Report
2023 Volume.16 No. 32 p.1119 ~ p.1130
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Surveillance of Tick Density in the Republic of Korea, 2022
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Noh Byung-Eon
Kim Hyun-Woo
Ju Jung-Won
Lee Hee-Il
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Abstract
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Severe fever with thrombocytopenia syndrome (SFTS) is a class 3 infectious disease, fitst identified in China, 2009. In 2013, SFTS case was reported in the Republic of Korea, and the number of patients has been increasing. Ticks are infectious agent vectors that transmit varied pathogens such as viruses, bacteria, rickettsia and parasites. To surveillance of ticks was monitored for prevent a tick-borne diseases, from April to November, at 16 regions and 4 environments ( gravs, grasslands, copses, and mountain roads) surveyed in 2022. In this survey, a total of 61,259 ixodid ticks comprising 3 genere and 5 species were collected. Of the identified ticks, Haemaphysalis longicornis was the most frequently collected ticks (except larval ricks). The most abundantly collected environment was glassland (20,991 ticks, 34.3%) followed by copses (20,558 ticks, 33.6%), graves (11,048 ticks, 18.0%), and mountain roads (8,662 ticks, 14.1%). Tick density (Trap Index, no. of collected tick/trap) in 2022 decreased by 9.3%, 27.0% compared to 2021 and average of last 5 years. As outdoor activities are expected to increase due to the recent relaxation of quarantine guidelines increase in the number of people working outdoors, there is a high concern that the number of SFTS patients will increase. Therefore, continuous investigation is necessary to tick surveillance.
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KEYWORD
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Severe fever with thrombocytopenia syndrome, Tick, Surveillance
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