Korean J Parasitol.  1992 Mar;30(1):49-52. 10.3347/kjp.1992.30.1.49.

Head louse infestation among girls in an orphanage and women in a mental hospital and mass-delousing with bioallethrin (PARA aerosol)

  • 1Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea.


After evaluation of presence of nits and/or lice, PARA aerosol(bioallethrin with piperonyl butoxide) was applied to 97 women and 43 girls, regardless of the results of their infestation, living at 2 separate institutions. Twelve days after the first treatment the second treatment was carried out and the presence of head lice was examined for the evaluation of treatment effect. Among total 140 subjects, 98(70.0%) were nit positive and 85(60.7%) were louse positive. The infestation rates of girls by nit(86.0%) and louse(86.0%) were higher than those of women, nit 62.9% and louse 49.5% (p less than 0.01). Also the detection rate of lice among nit positive subjects was higher in girls(100%) than in women(78.7%). On the second evaluation 12 days after treatment, 36(97.3%) out of 37 girls and 46(95.8%) out of 48 women were found louse-free. There was no difference in the treatment efficacy between the women and girls.

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