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Korean J Parasitol > Volume 12(2):1974 > Article

Original Article
Korean J Parasitol. 1974 Dec;12(2):95-100. English.
Published online Mar 20, 1994.  http://dx.doi.org/10.3347/kjp.1974.12.2.95
Copyright © 1974 by The Korean Society for Parasitology
The periodicity of the microfilariae of Brugia malayi in Cheju Island, Korea
Byong-Seol Seo
Department of Parasitology and Institute of Endemic Diseases, College of Medicine, Seoul National University, Korea.
Abstract

The periodicity of the microfilariae of Brugia malayi was studied in 9 human carriers from Shin-san Ri, Seong-san Myon, Cheju Island. The periodicity pattern was markedly nocturnal and the peaks were observed between 21:30 p.m. and 5:30 a.m.

The average peak count was 1:30 a.m. and the percentage of peak count at this time was 95.3. The ratio of minimum of the average peak count percentage to the maximum was 8.3.

The periodicity pattern of B.malayi in Cheju Island was compared with that in Inland and no differences were found between two forms. From the above observations, it was concluded that the periodicity of B. malayi in Korea is markedly nocturnal and closely resembles that in the strain of Penang, Malaya.

Figures


Fig. 1
Map of Korea, showing the two areas; Shin-san Ri (Cheju Island) and Yongju (Inland), mentioned in the paper.


Fig. 2
Showing the periodicity of the microfilariae of Brugia malayi in Cheju Is. and Malaya (Turner et Edeson 1957).


Fig. 3
Showing the periodicity of the microfilariae of Brugia malayi in Cheju Is. and Young ju.

Tables


Table 1
Microfilaria counts in cases of malayan filariasis from Cheju-Do


Table 2
Microfilaria counts in cases of malayan filariasis from Yongju area (Based on the report; D. C. Kim, 1971)


Table 3
Periodicity of the microfilariae of B. malayi

References
1. Brug SL. Proceeding Roy Soc Med 1931;24:663–674.
2. Edeson JF. Studies on filariasis in Malaya: the periodicity of the microfilariae of Brugia malayi and B. pahangi in animals. Ann Trop Med Parasitol 1959;53:381–387.
 
3. Hwang CH, et al. Korean Central J Med 1965;9(4):491–496.
4. Kim DC. The Report of NIH Korea 1971;8:147–165.
5. Kim JS, Lee WY, Chun SL. Ecology of filariasis on Che Ju Island. Korean J Parasitol 1973;11(1):33–53.
 
6. Lee KT, et al. J Korean Med Ass 1964;7(7):51–58.
7. Seo BS, Rim HJ, Seong SH, Park YH, Kim BC, Lim TB. [The Epidemiological Studies On The Filariasis In Korea: I. Filariasis In Cheju-Do(Quelpart Island)]. Korean J Parasitol 1965;3(3):139–145.
 
8. Turner LH, Edeson JF. Studies on filariasis in Malaya: the periodicity of the microfilariae of Wuchereria malayi. Ann Trop Med Parasitol 1957;51(3):271–277.
 
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