1990 Volume 65 Issue 11 Pages 687-692
The annual the incidence rate of tuberculosis in Tochigi prefecture has been slowed indecreasing or rather been increasing since 1980.
The purpose of the study is to clarify the factors infuluencing the yearly changes of theincidence.
The incidence rate of tuberculosis, positive rate in bacteriological findings, averageduration with active tuberculosis, and etc were observed from 1981 to 1987 by tuberculosiscontrol analytical chart.
The results thus obtained were as follows:
1. The incidence rate of tuberculosis has increased since 1982 in Tochigi prefecture.
2. In Tochigi prefecture, the proportion of patients with bacteriological examinationswas lower, and the rate of patients with positive findings was higher than that of Japan.
3. The incidence rate in the age group of 5-14 years in Tochigi prefecture was higherthan that of Japan.
Younger age group should be given health education of tuberculosis.
4. While the duration of active tuberculosis had been being shortened until 1984 in Tochigi prefecture, but since then the average duration became as long as that of wholeJapan.
5. The proportion of infectious patients without medical treatment in Tochigiprefecture had decreased until 1983, but since then it became as high as that of Japan.
Thesurveilance system of tuberculosis should be used to find infectious patients without medical treatment.
