Warning: mkdir(): Permission denied in /home/virtual/lib/view_data.php on line 81

Warning: fopen(upload/ip_log/ip_log_2024-03.txt): failed to open stream: No such file or directory in /home/virtual/lib/view_data.php on line 83

Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/virtual/lib/view_data.php on line 84
Geographical distribution of vectors and sero-strains of tsutsugamushi disease at mid-south inland of Korea
| Home | E-Submission | Sitemap | Contact us |  
top_img
Korean J Parasito Search

CLOSE

Korean J Parasito > Volume 35(3):1997 > Article

Original Article
Korean J Parasitol. 1997 Sep;35(3):171-179. English.
Published online Feb 11, 2009.  http://dx.doi.org/10.3347/kjp.1997.35.3.171
Copyright © 1997 by The Korean Society for Parasitology
Geographical distribution of vectors and sero-strains of tsutsugamushi disease at mid-south inland of Korea
H I Ree,*1I Y Lee,1S H Jeon,1 and Y Yoshida2
1Department of Parasitology, College of Medicine, Yonsei University, Seoul 120-752, Korea.
Received August 18, 1997; Accepted September 01, 1997.

Abstract

Studies of geographical distributions and relative population densities of the vector mites of tsutsugamushi disease were carried out in October 1996 at 12 locations of the mid-south inland of the Korean peninsula, where chigger mites have been never studied. Of 177 field rodents and insectivores collected, 154 (87.0%) were Apodemus agrarius. Total 25,707 chigger mites were collected and 14 species were identified, of which Leptotrombidium pallidum was predominant (79.8%) and L. palpale the next (8.9%). L. pallidum, the vector species, was widely distributed in all study areas, showing the highest density at Cho-o 2-dong, Sangju-si (chigger index 201.8), and the lowest at Tanwol-dong. Chungju-si (chigger index 40.7). The other vector species, L. scutellare was found only at the southern part of the study area such as Yobae and Mipyong, Kumrung-gun and Unsu, Kimchon-si. The northernmost areas of the L. scutellare distribution were coincided with the areas where anual mean air temperature is above 10.0 C. Among 157 A. agrarius sera tested, 48.3% was Karp, 1.7% Gilliam and 3.3% Kuroki. The rest of the sera were not able to determine the sero-type because of the cross antigen-antibody reactions among the tested sero-types.

Figures


Fig. 1
Geographical distribution and population densities of L. pallidum in Korea. The figures are chigger indices of L. pallidum.


Fig. 2
Geographical distribution and population densities of L. pallidum in Korea. The figures are chigger indices of L. scutellare. The dot line is the northernmost distribution of L. scutellare.


Fig. 3
Thirty years annual mean air temperature of each meteorological station in Korea. The dot line is the northernmost area where the mean air temperature is above 10.0℃.

Tables


Table 1
Field rodent and insectivore collections at 11 locations of the inland of Korea in October 1996


Table 2
Number and species of the chigger mites collected in the inland of Korea in October 1996


Table 3
Chigger-infestation rates and chigger indices of field rodents and insectivores collected at the 12 study locations in October 1996


Table 4
Geographical distribution and population density of trombiculid mites infested on Apodemus agrarius in the inland of Korea in October 1996


Table 5
Antibody positive rate of A. agrarius sera against O. tsutsugamushi serotypes, using IFA test

References
1. Asanuma K, et al. Jpn J Med Sci Biol 1962;15:297–308.
2. Campbell RW, Domrow R. Rickettsioses in Australia: isolation of Rickettsia tsutsugamushi and R. australis from naturally infected arthropods. Trans R Soc Trop Med Hyg 1974;68(5):397–402.
  
4. Chang WH. Current status of tsutsugamushi disease in Korea. J Korean Med Sci 1995;10(4):227–238.
 
6. Chang WH, Kang JS, Lee WK, Choi MS, Lee JH. Serological classification by monoclonal antibodies of Rickettsia tsutsugamushi isolated in Korea. J Clin Microbiol 1990;28(4):685–688.
 
8. Jackson EB, Danauskas JX, Smadel JE, Fuller HS, Coale MC, Bozeman FM. Occurrence of Rickettsia tsutsugamushi in Korean rodents and chiggers. Am J Hyg 1957;66(3):309–320.
 
9. Kawamura R. Med Bull Coll Med Univ Cincinnati 1926;4:1–229.
10. Kohls GM, et al. Am J Hyg 1945;41:374–396.
11. Lee BU, et al. Korea J Ecol 1988;11(1):17–28.
12. Lee IY, et al. Korean J Zool 1993;36:408–415.
13. Lee KW, et al. Korean J Entomol 1983;13(2):23–29.
14. Ree HI. Korean J Syst Zool 1990;6:57–70.
15. Ree HI, et al. Med Entomol Zool. 1997. pp. 48.
(in press)
16. Ree HI, Cho MK, Lee IY, Jeon SH. Comparative epidemiological studies on vector/reservoir animals of tsutsugamushi disease between high and low endemic areas in Korea. Korean J Parasitol 1995;33(1):27–36.
  
17. Ree HI, Lee HS, Lee IY, Yoshida Y. Epidemiological studies on host animals of tsutsugamushi disease in Korea. Korean J Parasitol 1991;29(2):181–188.
 
18. Ree HI, Lee IY, Cho MK. Determination of the vector species of tsutsugamushi disease in Korea. Korean J Parasitol 1991;29(1):87–92.
 
19. Ree HI, Lee IY, Cho MK. Study on vector mites of tsutsugamushi disease in Cheju Island, Korea. Korean J Parasitol 1992;30(4):341–348.
 
20. SASA M. Comparative epidemiology of Tsutsugamushi disease in Japan. Jpn J Exp Med 1954;24(6):335–361.
 
21. Shim JC, et al. Rep NIH Korea 1989;26:201–211.
22. Shirai A, Huxsoll DL, Dohany AL, Montrey RD, Werner RM, Gan E. Characterization of Rickettsia tsutsugamushi strains in two species of naturally infected, laboratory-reared chiggers. Am J Trop Med Hyg 1982;31(2):395–402.
 
23. Song HJ, Kim KH, Kim SC, Hong SS, Ree HI. [Population density of chigger mites, the vector of tsutsugamushi disease in Chollanam-do, Korea]. Korean J Parasitol 1996;34(1):27–33.
  
24. Tamura A, Urakami H, Tsuruhara T. Purification of Rickettsia tsutsugamushi by Percoll density gradient centrifugation. Microbiol Immunol 1982;26(4):321–328.
 
25. Traub R, Hertig M, Lawrence WH, Harriss TT. Potential vectors and reservoirs of hemorrhagic fever in Korea. Am J Hyg 1954;59(3):291–305.
 
Editorial Office
Department of Molecular Parasitology, Samsung Medical Center, School of Medicine, Sungkyunkwan University,
2066 Seobu-ro, Jangan-gu, Suwon 16419, Gyeonggi-do, Korea.
Tel: +82-31-299-6251   FAX: +82-1-299-6269   E-mail: kjp.editor@gmail.com
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © 2024 by The Korean Society for Parasitology and Tropical Medicine.     Developed in M2PI