Abstract
In the present report, the thhroat flora of the cases of Izuminetsu fever occurred among the school children of Azabu Primary School in Tokyo in March, 1954 and those of the normal schoal children in Tokyo were compared.
Because the present epidemic was first discovered and notified to the school authorities and the regional health centre by the authors, most of the throat swabs as the materials for the present work were collected in an early stage. Immediately after its discovery, the epidemic was diagnosed as Izuminetsu fever by the Control Team organized by the Tokyo Metropolitan Government and the Izuminetsu Research Group organized by the Ministry of Health and Welfare.
Cultures were made from the throat swabs on 10% yeast extract rabbit blood agar for isolation. Approximately 10 kinds of colonies thus obtained were selected, and their quantitative relations were investigated. Partly, furthea detailed biological prperties of them were examined.
In the same manner, normal control children were examined. As the result of the comparison of the data obtained in these two groups, the authors failed to recognize any qualitative difference between them. The species of organisms selected were restricted toa 10 species as stated in the above as the consequence of the selection. In other words, the majorities observed were.
α-type Streptococcus group, Neisseria group, Micrococcus group II, γ-type Streptococcus group, Diphtheroid group, Staphylococcus aureus group, other Staphylococcus group and Hemophilus group etc. A fair number of organisms belonging to β-type Streptococcus group was also recognized. Those found in small number were gf course, Pneumococcus of mucoid type, Krebsiella, Actinomyces and yeast-like organisms. Tn view of the above, as far as the above species of organisms are concerned, no particular findings to be mentioned in the throat bacterial flora were recorded. That is to say that they were judged to belong to the normal throat flora.
The above problem will be discussed in the Report 3 of the same series.
