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KMID : 0351619680090010109
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Kyungpook Medical Journal
1968 Volume.9 No. 1 p.109 ~ p.133
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An Epidemiological Study of Tuberculosis in Kyung Sang Pook Do, Korea
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Abstract
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A comprehensive and comparative study of the infection rate has teen done about 94,321 children in 534 schools out of 149, 066, 1st grade of primary school children aged 6∼7 years in 837 schools, and of prevalence rate of active pulmomary tuberculosis, about 90,430, unselected general residential pepulation over 5 years old in Kyung Sang Pook Do, Korea from 1964 to 1966.
Followings are the results obtained:
Ⅰ. Tuberculin reaction:
1. The rate of tuberculin reactors was 24.0% and 23.4% in male and 24.7% in female respectively.
2. The positive rate to PPD RT23 by districts was noted to high in incidence among the densely populated.
3. The positive rate was 33.1% in urban areas while it was 20.5% in ruural areas.
4. In the county town showed the high rate of infection than the rests while the districts where the Myon ofice located revealed no such differ ence in incidence.
5. The relation between transportation and incidence in this study showed the definite high rate in city and seaport while the very low incidence was noted in village areas.
6. The urban and coast areas showed the rate of infection, and the mountain areas very low incidence.
Ⅱ. The degrees tuberculin reaction :
1. The rate of tuberculin reactors, 0∼5mm in diameter of induration size was 76%, 6∼9mm was 1.7%, 10∼19mm was 14.2%, and more than 20mm was 8.2%. The strong reactors were slightly high in female.
2. To particular differences of tuberculin reaction were seen in each districts except for one coonty.
3. No rarticular differences of tuberculin reacution were seen among urban and rusal areas.
4. The definitely high incidence of strong reactors was noted where the county town while other areas showed no differences.
5. The strong reactors were slightly high in seaport but no definite changes were noted in general.
6. The incidence rate of strong reactors were definitely low in the mountain areas while other districts showed no definite change.
Ⅲ. The prevalence rate of active pulmonary tuberculosis :
1. The prevalence rate of active pulmonry tuberlosis was 8.17%, and the rate by sex was 8.17% in male and 6.57% in female.
2. The prevalence rate was also high among the dense residential population, however no definite correlation was notd between the density of population and the prevalence rate as seen in the injection rate.
3. The prevalence rate in city areas was 9.1%, and in the rural areas 7.63%.
4. The prevalence rate by geographical distribution was 8.37% and 8.23% in urban and coast areas respectively showing relatively high incidence, and the rate was low in rural and mountain areas showing 7.18% and 6.64% respectively.
5. The prevalence rate showed an increasing tendency by aging except for 5∼9 years groups that revealed high incidence compared with 10∼14 years groups.
6. The prevalence rate by age and sex was high in female under 24 years old while in the other age groups, the incidence was noted in male.
Ⅳ. Prevalence rate of active pulmonary tuberculoss by NTA classification:
1. By the extent of active pulmonary tuberculosis, 2.67% was minimal, 2.52% was moderately advanced, and 2.17% was far advanced.
2. In urban areas, moderately advanced cases were prevalent while rural areas, far advanced cases were high in incidence.
3. Geographical distributions of active cases were as follows ; the incidence of minimal cases was high in coast areas, moderately advanced was high in urban areas, and far advanced was high in rural areas. Par advanced cases were rare in coast areas.
4. By age, the extent of active pulmonary tuberculosis were as follows ; minimal cases were high in incidence among young age groups, and moderately advanced and far advanced cases were high in the groups of more than 40 years old.
5. By sex, the extent of active pulmonary tuberculosis were noted as follows ; the incidence of moderately advanced and far advanced cases were high in female (10∼39 years groups), and the incidence of moderately advanced and far advanced cases were high in male(more than 40 years old).
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KEYWORD
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