| geographical distribution and relative abundance of vectors of scrub typhus in the republic of korea. | 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 ... | 2009 | 19967086 |
| detection of orientia tsutsugamushi, the causative agent of scrub typhus, in a novel mite species, eushoengastia koreaensis, in korea. | 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 i ... | 2011 | 21443412 |
| transovarial transmission of orientia tsutsugamushi in leptotrombidium palpale (acari: trombiculidae). | transovarial transmission of orientia tsutsugamushi in colonies of leptotrombidium palpale was studied in the parent and f1 and f2 generations. both transovarial transmission and filial infection rates were 100% in the parent and f1 generations of leptotrombidium palpale. the filial infection rate in the f1 generation was 100%, but it declined to 94.3% in the f2 progeny. the sex ratio of the f1 generation from infected l. palpale was 1∶0.8 (male:female) and the proportion of males was relatively ... | 2014 | 24721932 |
| proposed vector candidate: leptotrombidium palpale for shimokoshi type orientia tsutsugamushi. | to identify the vector species for shimokoshi type orientia tsutsugamushi, a survey of larval trombiculid mites was conducted in yamagata prefecture, japan from april to may 2012. in all, 2889 larval trombiculid mites were obtained from 21 apodemus speciosus rodent hosts, 2600 of which were morphologically classified into eight species in three genera. after screening of o. tsutsugamushi dna in individual larval trombiculid mites using real-time pcr targeting the 16s ribosomal rna gene, serotype ... | 2013 | 23253042 |
| geographical distribution and seasonal indices of chigger mites on small mammals collected on the east coast of the republic of korea. | the geographical distributions and relative population densities of scrub typhus vector mites collected from small mammals were determined for 5 locations on the east coast of the republic of korea. collection sites included goseong, gangneung, and hoengseong in gangwon province and uljin and yeongdeok in gyeongbuk province. a total of 275 small mammals including members of rodentia (rodents) and soricomorpha (shrews, such as crocidura lasiura ) belonging to 4 genera and 4 species were captured ... | 2016 | 26653927 |
| monthly occurrence of vectors and reservoir rodents of scrub typhus in an endemic area of jeollanam-do, korea. | 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 mos ... | 2012 | 23230330 |
| molecular epidemiology of an orientia tsutsugamushi gene encoding a 56-kda type-specific antigen in chiggers, small mammals, and patients from the southwest region of korea. | a phylogenetic analysis of orientia tsutsugamushi was performed to elucidate its antigenic diversity in chiggers, small mammals, and patients. between september 2014 and december 2016, a total of 3,816 chiggers were identified within nine species of four genera in the southwest region of korea: leptotrombidium scutellare (49.9%; 1,907/3,816), leptotrombidium orientale (21.1%; 804/3,816), leptotrombidium pallidum (12.4%; 474/3,816), euchoengastia koreaensis (7.2%; 273/3,816), leptotrombidium palp ... | 2018 | 29313468 |
| coincidence between geographical distribution of leptotrombidium scutellare and scrub typhus incidence in south korea. | to clarify the geographical distribution of scrub typhus vectors in korea, a survey of larval trombiculid mites was conducted from 2005 to 2007 by collecting wild small mammals twice a year (spring and autumn) at 24 sites nationwide. a total of 67,325 mites representing 4 genera and 14 species were collected from 783 trapped rodents, corresponding to a chigger index (number of chigger mites per rodent) of 86.0. the predominant mite species were leptotrombidium pallidum (52.6%), leptotrombiduim s ... | 2014 | 25500568 |