With the matter for the real condition of hospitalized tuberculous children in Gunma Prefecture in March, 1958, investigations were made whether there is the infectious effect upon their classmates while in attendance at sehool.
1. Ninety four per cent, of hospitalized tuberculous children in Gunma Prefecture were admitted to the prefectural sanatorium “Tômô Ryôyôjo” to which a special class is attached. The sanatorium school is doing made its efficient use in full.
2. About 60% of the hospitalized tuberculous children had tuberculous patients in their home, and many were suspected to have been infected throuh household exposure.
3. About a half of the hospitalized tuberculous children were infectious cases, and more than half of the infectious cases had cavities, The ratio of the patients discovered by mas examination to those discovered by subjective symptoms was about 6 : 4; the fact makes known that the proportion of the latter is large for the group periodically examined every year. It is therefore got conscious of the necessity to increase the frequency of mass examination and to make it closer as well.
4. Infectious effect upon classmates was investigated, by consulting the records of tuberculin test, and by investigating the state of development of their tuberculosis, but no particular effect could have been confirmed. Many causes can be considered in this regard, but one of the most important things may be advancement in the school tuberculosis control, for example, the extended performance of B. C. G. inoculation.
To summarize, it is considered that as a source of tuberculosis infection in school, tuberculous children might be less important than tuberculous teachers. On the other hand, however, it is estimated that some number of open tuberculous children may still be left unnoticed for a period. In view of this, we should not be perfectly content with the tuberculosis control in status quo, but we should always aim at the more perfection.

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The postual blood pressure reflex was investigated on 155 children of the normal classes and 60 of the sickly children classes; 1st, 2nd and 3rd grades of the Momonoi Primary School in Maebashi City.
Change in blood pressure accompanying change in posture was classified into five types: A, B, C, D and E. The “prolonged type” was observed more frequently in sickly children classes than the normal. Blood pressure changes on posture alteration from the sitting to the lying and the reverse proved more unstable in children of the sickly children class.
For children of normal classes, a positive correlation was observed between the time for blood pressure fall on the change from the lying to the sitting posture and the time for the recovery of the blood pressure.
Such correlation was not observed for children of the sickly children class,
The “fatigue type” was also found oftener for sickly children classes than the normal, especialy for the 1st year children (P<0.05), justifing the arrangement and maintenance of the sickly children class.

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Recently, it is feared that the fitness for protection of the younger generation in Japan will fall down. The purpose of this study was to clarify the blood pressure regulation by utilizing a regulating reflex method of blood pressure among younger generation in Japan.
The study was made on 430 students, the 7th to the 9th grade at junior high school in Tokyo, from February to June 1995.
The results were summarized as follows:
1) The ratio of poor function in blood pressure regulation increased in comparison with the result of the investigations carried out in 1956 and 1984.
2) The blood pressure partly didn't drop just after the changing position from the lying to the sitting posture. The blood pressure didn't recover up to the resting value, even if 180 seconds passed after changing posture. A predominance of sympathetic nervous system was suggested.
3) It is necessary to reexamine the traditional criterion of regulating reflex method of blood pressure.

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In relation to tuburculous teachers of primary schools in Gunma prefecture during the period of from 1955 to 1957, their infections effect upon their school children was investigated.
1. Compared with the previous period, the number of teachers who developed tuberculosis during the above-mentioned period showed a remarkable decrease. While, on the other hand, the numbr of infectious tuberculosis can not be concidered to have decreased. Namely, about a half of the tubereulous teachers were infectious, evident or suspected, when their tuberculosis was discovered. It is essential therefore that it be made further efforts in realizing an early diagnosis of the patient.
2 So far as the results of tuberculin test revealed, no evident infections effects of tuberculous teachers upon their school children could be confirmed. This is probably due to extensively-performed B. C. G. inoculation, which has increased the number of tuberculin convertors due to B. C. G. inoculation, in consequence making it difficult to differentiate them from tuberculin natural convertors. Wnen, however, we looked at the development of tuberculosis in children who were in contact with tuberculous teachers, infectious effect of the latter was suspected to some extent. Especially in such a case as children who were in contact with teachers of infectious tuberculosis, the incidence rate was evidently higher than in controls, suggesting the menace to school hygine with infectious effect of the teachers.
From the above, it is considered that under the the present social conditiions, there is no gainsaying the fact that infectious effects of tuberculous teachers upon their school children is inevitable. In view of this, we are going to emphasize the necessity of strengthening the control of tuberculosis of teachers.

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Procedure and results of tuberculosis mass examination in primary schools in the years of 1956 and 1957 (number of examinees : 222, 630 in 1956 and 230, 400 in 1957) were investigated. Percentage of school children examied was 98.3% in the both years of 1956 and 1957;rate of tuberculin positive reactors was 69.6% in 1956 and 65.3% in 1957, and rate of tuberculosis found in the examinees was 0.08% in the both years of 1956 and 1957. It was fond that various examinations and B. C. G. inoculation had been well pervaded, and with regard to tuberculosis control, primary school was considered to be one of the groups thus managed most satisfactorily. Despite this, shortcomigs were found in some points in the performance. Namely, the followings are required to be improved :
1. There are few school in which the examination of the whole student body is performed twice a year, which is mostly attributable to insufficient budgetary appropriation. It is advisable to arrange an estimate so that all the primary schools can carry on tuberculosis examination at least twice a year.
2. There were some schools in which no physicians see medical service direct in the ascertainment of tuberculin reaction and the execution of B. C. G. inoculation. Such is found especially in the case with school at the place inconvenieently situated.
3. There is such tendency among the examinees that some of them are apt to reductant B. C. G. inoculation, because of the formltion of B. C. G. ulcer.
4. In some occasions, it takes too long time to know the results of mass photofluorographic examination as well as of close examination.
5. Sometimes confusion arises owing to errors in diagnosis and guidance of physicians concerning examinees with positive findings, or owing to discrepancy of views between physicians.

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