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KMID : 0377519810060010095
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Chung-Ang Journal of Medicine
1981 Volume.6 No. 1 p.95 ~ p.102
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The Evalustion of Mass Control on Primary School Children Against Ascaris Infection
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Chun Oh-Bae
Kang Shin-Yong
Shim Tae-Sub
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Abstract
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The soil-transmitted and contagious helminthes, such as Ascaris lumbricoides, whipworm, hookworm and pinworm are the commonest and the most widespread human parasites in Korea. However, the first intestinal nematode infection has been taken into account as the great endemic parasitic disease in this country. Data cited from KAPE(korean Association for Parasite Eradication) were analyzed on the bases of infection rate, fertilized ova passers/unfertilized ova passers and the evaluation of the effect of mass control on primary school-children during the past 10 years from 1969 to 1978. The results were summarized as follows: 1) The overall prevalence of Ascaris infection was decreased from 57.1% in 1969 to 22.8% in 1978 and the cumulative percent of decrease during that period was 34.3% and the mean annual decrease rate represented as 3.8%. 2) The cumulative rate of decrease in primary school children was in the range of 32.2-36.8% by school year. 3) The prevalence of Ascaris infection of primary school-children in rural area was 60% in 1969, it decreased to 17-30% in 1978, while the rates tangibly dropped to about 10% level in urban primary-school children. 4) The positive rate of A. lumbricoides in 1973 was composed of fertilized and unfertilized ova passers in the ratio of 43.l% :9.2% (F/U=4.68). Five years later in 1978 it changed to 3.22. 5) By applying the present results to the statistical model of Hayashi(1977), the theoretical infection rate per month and cure rate per treatment were computed as 2.54% and 33.3% respectively in primary-school children during the past 10 years. And the observed data were coincide with the theoretical data. From the above statistical analyses, it is distinct that the prevalence and F/U ratio remarkably decreased by efficient mass control on primary school children during the past 10 years from 1969 to 1978.
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KEYWORD
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