ArticleParasites, hosts and diseases2023
Prevalence of chigger mites and Orientia tsutsugamushi strains in northern regions of Gangwon-do, Korea.
Article in Parasites, hosts and diseases, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 4 citations in OpenAlex.
- Broad-spectrum molecular detection of zoonotic agents in wild micromammals: a nationwide surveillance study in the Republic of Korea.Parasites & vectors · 2026Article
- Phylogeographic diversity ofEpidemiology and infection · 2026Article
- Article
- Geographic distribution of Orientia tsutsugamushi strains on chigger mites in the Republic of Korea (2021-2023).Parasites & vectors · 2025Article
- Surveillance of Vector-Borne Zoonotic Diseases in South Korea: Uncovering Novel Pathogen Carriers Among Rodents and Mites Nationwide.Transboundary and emerging diseases · 2024Article
- [Surveillance of Chiggers Density in the Republic of Korea, 2022].Jugan geon-gang gwa jilbyeong · 2023Article
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
The present study aimed to survey the prevalence of chigger mites and Orientia tsutsugamushi (O. tsutsugamushi) infection in the northern regions of Gangwon-do, Korea. From early February to early June 2015, a total of 17,050 chiggers were collected from striped field mice, Apodemus agrarius, in Cheorwon-gun, Hwacheon-gun, Yanggu-gun, and Goseong-gun, which are well-known endemic areas of scrub typhus in Korea. The chiggers were analyzed using molecular genomic methods, as previously described. Among the 7,964 identified chiggers, the predominant species was Leptotrombidium pallidum (76.9%), followed by L. zetum (16.4%), L. orientale (4.3%), L. palpale (0.3%), L. tectum (0.2%), and Neotrombicula tamiyai (1.8%). The chigger index (CI) was highest in Hwacheon (115.58), followed by Cheorwon (97.02), Yanggu (76.88), and Goseong (54.68). Out of the 79 O. tsutsugamushi-positive chigger pools, 67 (84.8%) were identified as the Boryong strain, 10 (12.7%) as the Youngworl strain, and only 2 were the Jecheon strain. Based on the high infestation of chiggers in striped field rodents and the high rate of O. tsutsugamushi infection in chigger mites, Hwacheon-gun and Cheorwon-gun are presumed to be high-risk areas for scrub typhus. Furthermore, L. pallidum, a major vector of scrub typhus, and the dominant O. tsutsugamushi serotype, the Boryong strain, were found in the northern regions of Gangwon-do, Korea.
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