Accession Number : ADA551687


Title :   Serosurveillance of Scrub Typhus in Small Mammals Collected from Military Training Sites near the DMZ, Northern Gyeonggi-do, Korea, and Analysis of the Relative Abundance of Chiggers from Mammals Examined


Descriptive Note : Journal article


Corporate Author : NAVAL MEDICAL RESEARCH CENTER SILVER SPRING MD RICKETTSIAL DISEASES DEPT


Personal Author(s) : Kim, Heung C ; Lee, In Y ; Chong, Sung T ; Richards, Allen L ; Gu, Se H ; Song, Jin-Won ; Lee, John S ; Klein, Terry A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a551687.pdf


Report Date : Sep 2010


Pagination or Media Count : 9


Abstract : Comprehensive quarterly serosurveillance on scrub typhus in small mammals collected from military training sites located near the Demilitarized Zone (DMZ), northern Gyeonggi-do (Province), ROK was conducted to determine the potential rodent-borne and associated ectoparasite disease risks to military personnel. A total of 1,196 rodents and insectivores representing 8 species, Apodemus agrarius (87.3%, n = 1,044), Mus musculus (5.4%, n = 65), Crocidura /asiura (3.3%, n = 40), Microtus fortis (2.6%, n = 31), Micromys minutus (0.3%, n = 4), Tscherskia triton (0.3%, n = 4), Rattus norvegicus (0.3%, n = 4), and Myodes regulus (0.3%, n = 4) were assayed for the presence of antibodies to Orientia tsutsugamushi. 0. tsutsugamushi antibodies were detected in 6 of 8 species and seroprevalence determined; A. agrarius (45.6%), M. musculus (23.1%), M. fortis (48.4%), M. minutus (50.0%), T. triton (50.0%), and R. norvegicus (25.0%). A total of 31,184 chigger mites collected from 508 rodents and insectivores were slide-mounted and 10 species belonging to 4 genera were identified. Leptotrombidium pallidum (53.4%) was the most frequently collected, followed by L. palpale (15.7%), Neotrombicu/a tamiyai (14.3%), L. orientale (10.7%), L. zetum (3.1%), Walchia tragi/is (2.1%), and L. gemiticu/ um (0.8%), while the remaining 3 species, L. subintermedium, N. gardel/ai, and Euschoengastia koreaensis were rarely observed (prevalence 1 0%). In contrast to previous surveys, higher chigger indices of the primary scrub typhus vectors L. pallidum (165.4), L. orientale (45.0), and L. palpale (21.4), were observed during the spring season.


Descriptors :   *DEMILITARIZED ZONES , *MAMMALS , *MILITARY TRAINING , *SCRUB TYPHUS , ANTIBODIES , DISEASES , ECTOPARASITES , INDEXES , RODENTS , SEROLOGY , SURVEYS , TRITONS , TROMBICULID MITES


Subject Categories : Government and Political Science
      Biology
      Medicine and Medical Research
      Military Forces and Organizations


Distribution Statement : APPROVED FOR PUBLIC RELEASE