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KMID : 0383919740110000107
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Report of National Institute of Health
1974 Volume.11 No. 0 p.107 ~ p.116
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Studies on control of intestinal parasites in Korea
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金東燦/Kim, D.C.
李溫永/崔秉煥/韓義正/郭鎭成/Lee, O.Y./Choi, B.H./Han, E.J./Kwak, J.S.
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Abstract
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Effect of periodic mass treatment has been assessed for the 5th year´s work against ascariasis and hookworm infection in reducing the respective prevalence rates in primary schools in a rural area of Korea. Methods in conducting mass treatment was discussed for better results.
1. The prevalence rate of ascariasis tended to decrease 6.2~7.0% per year on average when the mass treatment was conducted regularly twice a year, and 11.1% per year when conducted three times a year.
2. The reduction of the prevalence rate by successive years of ascariasis was considered largely influenced by the efficacy of anthelminthic to be used in the mass treatment was desired to have an efficacy exceeding at least 80% in the egg negative eonversion rate to bring about successful result. Piperazine adipate which showed 58.O~63.1% in Ascaris egg negative convesion rate, was considered inefficient in the reduction of prevalence in such rural conditions in Korea, considering expenses, efforts, and time required in carrying out the works.
3. Hookworm infection which has been dropped to a level of 2~3% within a few years of mass treatment, two to three times a year, has lasted with low prevalence rate regardless of the routine mass treatment in the success years.
4. In order to bring about better result in the control ef common parasites, anthelminthics effective simultaneously to a few species were desired to be evaluated from cost-effect and cost-benefit point of view.
5. Environmental control of the parasite products was considered essential in achieving relatively rapid and solid reduction in prevalence of infection by using mass treatment technique at least in the early period of the mass treatment project in a rural community.
6. Since infestaton of common intestinal parasites among schoolchildren occurs more often in their house and village areas, mass treatment should be conducted simultaneously both at schools and village to increase control effect.
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KEYWORD
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