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Parasit Host Dis > Volume 22(1):1984 > Article

Brief Communication
Korean J Parasitol. 1984 Jun;22(1):141-143. English.
Published online Mar 20, 1994.  http://dx.doi.org/10.3347/kjp.1984.22.1.141
Copyright © 1984 by The Korean Society for Parasitology
Head louse infestation among primary school children in Seosan-gun, Chungnam Province
Soon Hyung Lee,Chang Wan Oh and Jong Yil Chai
Department of Parasitology, College of Medicine, Seoul National University, Korea.

The head louse infestation had been no problem since 1960s in Korea. However, the present study revealed highest infestation rate among the primary school children in Seosan-gun, Chungnam Province in July 1983. The cases of louse positive were determined by identifying the adult worms and/or their nits on scalp and hairs. The overall louse positive rate among 615 children examined was 73.5 percent. The rate was higher in girls (78.8 percent) than in boys (67.6 percent) and was highest in 3rd-4th school grades. It was observed that the more the number of family members the higher the infestation rate of children. The positive children were treated with 20 percent benzyl benzoate solution after the test for louscidal effect in petri dish. However, establishment of intensive control measure is needed to prevent further infestation.


Fig. 1
Louse positive rate according to school grades in school boys and girls.

Fig. 2
The relationship between number of family members and adult lice and/or nits positive rate among the school children examined. The correlation coefficient, r=0.944.


Table 1
Infestation rate of head louse among primary school children in Seosan-gun, Chung-nam Province(1983)

Table 2
Killing effect of lice by 3 kinds of pesticides

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