Parasites, Hosts and Diseases

"Young-Sun Lee"

Original Articles

Monthly Occurrence of Vectors and Reservoir Rodents of Scrub Typhus in an Endemic Area of Jeollanam-do, Korea: Seung Hyun Lee, Young-Sun Lee, In Yong Lee, Jae Won Lim, Hee-Kwan Shin, Jae-Ran Yu, Seobo Sim; Korean J Parasitol 2012;50(4):327-331.
Published online November 26, 2012; DOI: https://doi.org/10.3347/kjp.2012.50.4.327

Abstract
PDF

Monthly surveys were conducted to investigate the occurrence of chigger mites and seroprevalence of scrub typhus among small mammals in Jeollanam-do, the southwestern part of Korea, from November 2006 through October 2007. Fifty-eight small mammals, including 57 Apodemus agrarius (98.3%) and 1 Crocidura lasiura (1.7%), were captured, and a total of 4,675 chigger mites representing 4 genera and 8 species were collected from them. The chigger infestation rate among small mammals was 69.0%. The most predominant species in A. agrarius was Leptotrombidium scutellare (54.0%), followed by Leptotrombidium pallidum (39.4%), Leptotrombidium orientale (4.4%), Leptotrombidium palpale (1.1%), Neotrombicula tamiyai (0.6%), Eushoengastia koreaensis (0.3%), Neotrombicula gardellai (0.3%), and Cheladonta ikaoensis (<0.1%). The chigger index of A. agrarius was the highest in October (740.0), followed by November (242.0), September (134.6), March (98.3), February (38.2), January (35.3), December (34.5), April (30.8), and May (1.7). The average antibody positive rate of scrub typhus in wild rodents was 50.0%. The seropositive rates were high in October (100.0%) and November (83.3%), whereas those in other months were relatively low (28.6-57.1%). The chigger index of L. scutellare rapidly increased in September to form an acuminate peak in October, followed by a gradual decline. These results suggest that the outbreak of scrub typhus in the southwestern part of Korean peninsula is mostly due to L. scutellare.

Citations

Citations to this article as recorded by

Seasonal dynamics and niches of three vector chigger species at a focus of scrub typhus in southwest China
Yan Lv, Peng-Wu Yin, Xian-Guo Guo, Rong Fan, Cheng-Fu Zhao, Zhi-Wei Zhang, Ya-Fei Zhao, Lei Zhang
Frontiers in Veterinary Science.2025;[Epub] CrossRef
Associations of meteorological factors and dynamics of scrub typhus incidence in South Korea: A nationwide time-series study
Taehee Chang, Kyung-Duk Min, Sung-il Cho, Yoonhee Kim
Environmental Research.2024; 245: 117994. CrossRef
Epidemiologic changes of a longitudinal surveillance study spanning 51 years of scrub typhus in mainland China
Pei-Ying Peng, Hui-Ying Duan, Lei Xu, Lin-Tao Zhang, Ji-Qin Sun, Ya Zu, Li-Juan Ma, Yan Sun, Ting-Liang Yan, Xian-Guo Guo
Scientific Reports.2024;[Epub] CrossRef
A cross sectional study on molecular prevalence of Orientia tsutsugamushi in household rat population of South India
S. Purushothaman, P. Azhahianambi, M. Dharman, R. Gokula Kannan, K.G. Tirumurugaan, C. Soundararajan, R.P. Aravindh Babu, Panneer Devaraju, John A.J. Prakash
Comparative Immunology, Microbiology and Infectious Diseases.2024; 111: 102212. CrossRef
Rickettsial infections: prevalence and diagnosis of scrub typhus in India
Vigneshwaran Ravishankar, Shridhar Narayanan, Radha Krishan Shandil
Frontiers in Tropical Diseases.2024;[Epub] CrossRef
Serological Detection and Epidemiological Factors Associated with Scrub Typhus among Undifferentiated Febrile Illness Patients in a Tertiary Care Hospital
V.M. Somasunder, K. Akila, S. Sijimol, S. Senthamarai, S. Sivasankari, C. Anitha, V.J. Subha
Journal of Pure and Applied Microbiology.2021; 15(3): 1442. CrossRef
Geographical Distribution and Epidemiologic Factors of Chigger Mites on Apodemus agrarius during Autumn in Korea
In Yong Lee, Jae-Won Lim, Jang Hoon Seo, Heung Chul Kim, Ku Jae Lee, Tai-Soon Yong, Won-Ja Lee, Jae-Ran Yu, Seobo Sim
The Korean Journal of Parasitology.2021; 59(5): 473. CrossRef
Epidemiological Characteristics of Rodents and Chiggers with Orientia Tsutsugamushi in the Republic of Korea
Jung Wook Park, Dae Sung Yu, Gi Seong Lee, Jin Jong Seo, Jae Keun Chung, Jae Il Lee
The Korean Journal of Parasitology.2020; 58(5): 559. CrossRef
Risk factors for acquisition of scrub typhus in children admitted to a tertiary centre and its surrounding districts in South India: a case control study
Winsley Rose, Gagandeep Kang, Valsan Philip Verghese, Sadanandane Candassamy, Prasanna Samuel, John Jude Antony Prakash, Jayaprakash Muliyil
BMC Infectious Diseases.2019;[Epub] CrossRef
Occurrence rates of wild rodent hosts and chigger mites and the infection rate ofOrientia tsutsugamushiin the central region of South Korea from 2015 to 2018
Moon Bo Choi, Yeongbu Kim, Da Young Kim, Ohseok Kwon
Entomological Research.2019; 49(8): 374. CrossRef
Scrub typhus ecology: a systematic review of Orientia in vectors and hosts
Ivo Elliott, Isabelle Pearson, Prabin Dahal, Nigel V. Thomas, Tamalee Roberts, Paul N. Newton
Parasites & Vectors.2019;[Epub] CrossRef
Annual Fluctuation in Chigger Mite Populations and <italic>Orientia Tsutsugamushi</italic> Infections in Scrub Typhus Endemic Regions of South Korea
Seong Yoon Kim, Byoungchul Gill, Bong Gu Song, Hyuk Chu, Won Il Park, Hee Il Lee, E-hyun Shin, Shin-Hyeong Cho, Jong Yul Roh
Osong Public Health and Research Perspectives.2019; 10(6): 351. CrossRef
Identification and Characterization of Orientia chuto in Trombiculid Chigger Mites Collected from Wild Rodents in Kenya
Clement Masakhwe, Piyada Linsuwanon, Gathii Kimita, Beth Mutai, Surachai Leepitakrat, Santos Yalwala, David Abuom, Nutthanun Auysawasi, Tom Gilbreath, Elizabeth Wanja, John Waitumbi, Erik Munson
Journal of Clinical Microbiology.2018;[Epub] CrossRef
A Study on the Public Health Disasters using Meteorological Factor: Scrub Typhus in South Korea
Younggon Lee, Kyuhyun Choi, Jaewon Kwak
Journal of the Korean Society of Hazard Mitigation.2018; 18(3): 343. CrossRef
RETROSPECTIVE ANALYSIS OF THE EPIDEMIOLOGIC LITERATURE, 1990–2015, ON WILDLIFE-ASSOCIATED DISEASES FROM THE REPUBLIC OF KOREA
Jusun Hwang, Kyunglee Lee, Young-Jun Kim, Jonathan M. Sleeman, Hang Lee
Journal of Wildlife Diseases.2017; 53(1): 5. CrossRef
Prevalence and Phylogenetic Analysis ofOrientia tsutsugamushiin Rodents and Mites from Central India
Ruchi Bhate, Nilesh Pansare, Sandeep P. Chaudhari, Sukhadeo B. Barbuddhe, Vijay K. Choudhary, Nitin V. Kurkure, Sunil W. Kolte
Vector-Borne and Zoonotic Diseases.2017; 17(11): 749. CrossRef
Geographical Distribution and Seasonal Indices of Chigger Mites on Small Mammals Collected on the East Coast of the Republic of Korea
Gab-Man Park, Ho-Sung Shin
Journal of Parasitology.2016; 102(2): 193. CrossRef
Seroepidemiological Survey of Zoonotic Diseases in Small Mammals with PCR Detection of Orientia tsutsugamushi in Chiggers, Gwangju, Korea
Jung Wook Park, Jae Keun Chung, Sun Hee Kim, Sun Ju Cho, Yi Deun Ha, So Hyang Jung, Hye Jung Park, Hyun Jae Song, Jung Yoon Lee, Dong Min Kim, Jah Pyus, Dong Ryong Ha, Eun Sun Kim, Jae Il Lee
The Korean Journal of Parasitology.2016; 54(3): 307. CrossRef
Scrub Typhus Incidence Modeling with Meteorological Factors in South Korea
Jaewon Kwak, Soojun Kim, Gilho Kim, Vijay Singh, Seungjin Hong, Hung Kim
International Journal of Environmental Research and Public Health.2015; 12(7): 7254. CrossRef
Larval Chigger Mites Collected from Small Mammals in 3 Provinces, Korea
In-Yong Lee, Hyeon-Je Song, Yeon-Joo Choi, Sun-Hye Shin, Min-Kyung Choi, So-Hyun Kwon, E-Hyun Shin, Chan Park, Heung-Chul Kim, Terry A. Klein, Kyung-Hee Park, Won-Jong Jang
The Korean Journal of Parasitology.2014; 52(2): 225. CrossRef
Epidemiology of Scrub Typhus and the Eschars Patterns in South Korea from 2008 to 2012
Ji-Hyuk Park, Sun-Ja Kim, Seung-Ki Youn, Kisoo Park, Jin Gwack
Japanese Journal of Infectious Diseases.2014; 67(6): 458. CrossRef
Coincidence between Geographical Distribution of Leptotrombidium scutellare and Scrub Typhus Incidence in South Korea
Jong Yul Roh, Bong Gu Song, Won Il Park, Eun Hee Shin, Chan Park, Mi-Yeoun Park, Kyu Sik Chang, Wook Gyo Lee, Hee Il Lee, E-Hyun Shin, Xue-jie Yu
PLoS ONE.2014; 9(12): e113193. CrossRef
A Case Series of Possibly Recrudescent Orientia tsutsugamushi Infection Presenting as Pneumonia
Jae-Hyoung Im, Ji Hyeon Baek, Jin-Soo Lee, Moon-Hyun Chung, Sun Myoung Lee, Jae-Seung Kang
Japanese Journal of Infectious Diseases.2014; 67(2): 122. CrossRef
Are There Spatial and Temporal Correlations in the Incidence Distribution of Scrub Typhus in Korea?
Maengseok Noh, Youngjo Lee, Chaeshin Chu, Jin Gwack, Seung-Ki Youn, Sun Huh
Osong Public Health and Research Perspectives.2013; 4(1): 39. CrossRef

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Geographical Distribution and Relative Abundance of Vectors of Scrub Typhus in the Republic of Korea: In Yong Lee, Heung Chul Kim, Young-Sun Lee, Jang Hoon Seo, Jae Won Lim, Tae Soon Yong, Terry A. Klein, Won Ja Lee; Korean J Parasitol 2009;47(4):381-386.
Published online December 1, 2009; DOI: https://doi.org/10.3347/kjp.2009.47.4.381

Abstract
PDF

A survey to determine the geographical distribution and relative abundance of potential vectors of scrub typhus was conducted from October to November 2006 at 13 localities throughout the Republic of Korea. Apodemus agrarius accounted for 97.6% (80/82) of all rodents, while only 2 Myodes regulus (2/82) were collected. A total of 10,860 chiggers were collected from A. agrarius belonging to 4 genera and 8 species, while only Walchia fragilis (40) was collected from Myodes regulus. Leptotrombidium pallidum (8,137; 74.9%), a vector of scrub typhus, was the predominant species collected from A. agrarius followed by Leptotrombidium scutellare (2,057, 18.9%), Leptotrombidium palpale (279; 2.7%), Leptotrombidium orientale (232; 2.1%), and Leptotrombidium zetum (79; 0.7%), Neotrombicula tamiyai (58; 0.5%), Euschoengastica koreaensis (16; 0.1%), and Cheladonta ikaoensis (2; < 0.1%). L. pallidum was the predominant chigger collected at collection sites in Gangwon (100%), Gyeonggi (87.2%), Chungnam (100%), Chungbuk (100%), Jeonbuk (73.9%), Jeonnam (77.0%), and Gyeongbuk (66.1%) provinces, whereas L. scutellare was the predominant chigger collected in Gyeongnam province (77.9%) and Jeju Island (62.3%). Data suggest a correlation between chigger population abundance and human cases of scrub typhus in Korea.

Citations

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PLoS ONE.2014; 9(12): e113193. CrossRef
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