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Detection of Orientia tsutsugamushi, the causative agent of scrub typhus, in a novel mite species, Eushoengastia koreaensis, in Korea.
Vector Borne Zoonotic Dis. 2011 Mar; 11(3):209-14.VB

Abstract

To identify potential vector species of scrub typhus in the Republic of Korea (ROK), chigger mites were harvested from wild rodents captured at nine localities in October 2005. The bodies of the chigger mites were individually punctured with a fine pin, squeezed out internal contents, and examined for Orientia tsutsugamushi DNA by nested polymerase chain reaction. The exoskeleton of associated chiggers was mounted on glass slides with polyvinylalcohol (PVA) medium for identification. Among 830 individuals belonging to 4 genera and 14 species, O. tsutsugamushi was detected from 22 chiggers of six species, with an overall infection rate of 2.7%. The infection rate was highest for Leptotrombidium palpale (5.3%), followed by Neotrombicula japonica (4.3%), Leptotrombidium scutellare (3.7%), Leptotrombidium orientale (3.6%), Eushoengastia koreaensis (1.9%), and Leptotrombidium pallidum (1.5%). This study first reported O. tsutsugamushi infection from N. japonica and E. koreaensis larvae in the ROK. The population densities of L. pallidum (33.4 chiggers/rodent), historically confirmed as a primary vector of scrub typhus in the ROK, were high, whereas its infection rate was relatively low (1.5%). However, E. koreaensis was only collected from 154 individuals at seven collection sites and its infection rate was demonstrated relatively high (mean 1.9%). Additional studies are needed to determine the role of vector species in the epidemiology of scrub typhus.

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Authors+Show Affiliations

Lee HI
Division of Medical Entomology, Korea Centers for Disease Control and Prevention, Seoul, Korea.
Shim SK
No affiliation info available
Song BG
No affiliation info available
Choi EN
No affiliation info available
Hwang KJ
No affiliation info available
Park MY
No affiliation info available
Park C
No affiliation info available
Shin EH
No affiliation info available

MeSH

AnimalsArachnid VectorsDNA, BacterialMurinaeOrientia tsutsugamushiPolymerase Chain ReactionPopulation DensityRepublic of KoreaRodent DiseasesRodentiaScrub TyphusSequence Analysis, DNATrombiculiasisTrombiculidae

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21443412

Citation

Lee, Hee Il, et al. "Detection of Orientia Tsutsugamushi, the Causative Agent of Scrub Typhus, in a Novel Mite Species, Eushoengastia Koreaensis, in Korea." Vector Borne and Zoonotic Diseases (Larchmont, N.Y.), vol. 11, no. 3, 2011, pp. 209-14.
Lee HI, Shim SK, Song BG, et al. Detection of Orientia tsutsugamushi, the causative agent of scrub typhus, in a novel mite species, Eushoengastia koreaensis, in Korea. Vector Borne Zoonotic Dis. 2011;11(3):209-14.
Lee, H. I., Shim, S. K., Song, B. G., Choi, E. N., Hwang, K. J., Park, M. Y., Park, C., & Shin, E. H. (2011). Detection of Orientia tsutsugamushi, the causative agent of scrub typhus, in a novel mite species, Eushoengastia koreaensis, in Korea. Vector Borne and Zoonotic Diseases (Larchmont, N.Y.), 11(3), 209-14. https://doi.org/10.1089/vbz.2009.0180
Lee HI, et al. Detection of Orientia Tsutsugamushi, the Causative Agent of Scrub Typhus, in a Novel Mite Species, Eushoengastia Koreaensis, in Korea. Vector Borne Zoonotic Dis. 2011;11(3):209-14. PubMed PMID: 21443412.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Detection of Orientia tsutsugamushi, the causative agent of scrub typhus, in a novel mite species, Eushoengastia koreaensis, in Korea. AU - Lee,Hee Il, AU - Shim,Soo Kyoung, AU - Song,Bong Gu, AU - Choi,Eun Na, AU - Hwang,Kyu Jam, AU - Park,Mi Yeoun, AU - Park,Chan, AU - Shin,E-Hyun, PY - 2011/3/30/entrez PY - 2011/3/30/pubmed PY - 2014/8/7/medline SP - 209 EP - 14 JF - Vector borne and zoonotic diseases (Larchmont, N.Y.) JO - Vector Borne Zoonotic Dis VL - 11 IS - 3 N2 - To identify potential vector species of scrub typhus in the Republic of Korea (ROK), chigger mites were harvested from wild rodents captured at nine localities in October 2005. The bodies of the chigger mites were individually punctured with a fine pin, squeezed out internal contents, and examined for Orientia tsutsugamushi DNA by nested polymerase chain reaction. The exoskeleton of associated chiggers was mounted on glass slides with polyvinylalcohol (PVA) medium for identification. Among 830 individuals belonging to 4 genera and 14 species, O. tsutsugamushi was detected from 22 chiggers of six species, with an overall infection rate of 2.7%. The infection rate was highest for Leptotrombidium palpale (5.3%), followed by Neotrombicula japonica (4.3%), Leptotrombidium scutellare (3.7%), Leptotrombidium orientale (3.6%), Eushoengastia koreaensis (1.9%), and Leptotrombidium pallidum (1.5%). This study first reported O. tsutsugamushi infection from N. japonica and E. koreaensis larvae in the ROK. The population densities of L. pallidum (33.4 chiggers/rodent), historically confirmed as a primary vector of scrub typhus in the ROK, were high, whereas its infection rate was relatively low (1.5%). However, E. koreaensis was only collected from 154 individuals at seven collection sites and its infection rate was demonstrated relatively high (mean 1.9%). Additional studies are needed to determine the role of vector species in the epidemiology of scrub typhus. SN - 1557-7759 UR - https://www.unboundmedicine.com/medline/citation/21443412/Detection_of_Orientia_tsutsugamushi_the_causative_agent_of_scrub_typhus_in_a_novel_mite_species_Eushoengastia_koreaensis_in_Korea_ L2 - https://www.liebertpub.com/doi/10.1089/vbz.2009.0180?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -