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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.
Abstract
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.
Figures
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.
Tables
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
References
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