I attempted the examination of the blood type of Okinawan people in order to find out the ethnological relationship between Okinawan people and the inhabitants in the other prefectures of Japan. The result, which I examined the blood type of 4, 017 persons consisting of primary school children, junior high school pupils and college students, was as follows : According to the A-B-O method for the blood type, A type covered. 39.25%; O type, 32.06; B type, 20.29%; A-B type, 8.3% The most large amount of distribution was A type, and A-B type marked the smallest distribution. Compared this datum with the examination results made by other scholars in Japan, the distribution status of the blood type completely corresponded between two research results. This coincides with the statements announced by other scholars who have been asserting that Okinawan people are ethnologically same to Japanese. The blood type examination by M-N method showed 22.80% in M type, 30.78% in N type and 46.41% in M-N type as the result which I tried the blood type examination for 621 junior high school pupils. This result, in distribution, was different from the reports by the other scholars. The number of persons examined was so small that I could not reach to the proper judgement, accordingly it would be required to do the continuous research in the future. By the R-h method, I examined 3, 369 members of groups of junior high school pupils and college students. The result of R-h (-) type 1.10% was not different conspicuously from the formerly published reports concerning the same type examination for Okinawan people. However, this result showed the difference in distribution from the reports on Japanese people's R-h blood type. This high percentage of R-h (-) in Okinawa, I conjecture, proves that racial mixture has been made between Okinawan people and the other race.
Currently in Japan, annual numbers of reported cases of Typhoid fever have fallen below a level of 500 cases in a year. This corresponds to 1 % of the 1945 incidence. However the disease has not been eradicated completely and may have been possibility of outbreaks. As proposed countermeasures, a national central control system based on a new approach was established and classification by Salmonella typhi phage type was newly introduced in order to set up an organization for information control in interepidemic periods. As part of this system the author studied the current epidemiological picture of typhoid which now occurs sporadically in order to develop a basis for furture countermeasures. For the purposes only the cases from which Salmonella typhi isolated were investigated. Cases answering this purpse in 1967, 1968 and 1969 consisted of 129 carriers and 438 patients among a total 754. As a result of analysis of their epidemiological data, the following conclusions were drawn. Future countermeasures for typhoid control will require a better scientific grasp of Salmonella typhi as well as consistent control of diagnosis, treatment and after-care. Fortunately to date, there have been no difficulties in diagnosis and identification as a result of the use of antibiotics but some problems can be expected to arise in the future By these methods it should be possible to obtain more advanced information on interepidemic periods and to exercise a better control.
It has been well established that the intestinal flora occupies an extremely important role in the preservation of the good health of an individual. Antibiotics as used are primarily directed to eradication of target bacilli but close observation must be kept on their effect on the normal intestinal flora. Suppression of this normal flora may lead to the superinfection phenomenon. In fact this concept has been further elaborated to the point that awareness of the problems of interference with normal bowel physiology has been developed. Disruption of E. coli normal flora by invasion with external pathogens leading to dysentery has been recognized. However ease of differentiation of pathogens from normal E. coli bowel inhabitants has been a problem The author isolated E. coli from stools and sub-grouped them serologically. The alterations and flow of E. coli were followed in a day to day study. The results were as follows:1) In healthy subjects, E. coli of the same serotype are stable and permanent bowel inhabitants.2) With diarrhea the intestinal flora is disrupted and alterations in normal resident E. coli are seen.3) In those constitutionally disposed to diarrhea more than 2 serotypes of E. coli are normally resident in the bowel of a majority of them. These individuals thus seem to be in poor bowel homeostasis.4) In acute gastroenteritis not due to a specific organism a transient alteration occurs but rapidly returns to a stabilized growth of E. coli. These results indicate that E.coli which is always present in normal intestine plays a delicate role in the preservation of our health. Thus the maintenance of a strong stabilized strain of E. coli is required for health.
In 1971, Prof. Fukui published a simplified method of the nutritional servey. So, the auther compared this method with the nutritional servey method by the nutritive value from the composition of food. As the analytical data, the author used the nutritional servey of medical examination in the Ikawa, Shizuoka Prefecture, 1971. From the result, the correlation value on both methods was high. Therefore, the author concluded that the Fukui's method could use the nutritional servey in agricultural area.