小兒下痢症における大腸菌の研究

抄録

Escherichia Coli in stools of healthy and diarrhetic infants were examined, in order to investigate the role of Escherichia coli infantile diarrhea.
1) Although the distribution of Escherichia coli O_1-25 varied much, it was O₁₅, O₂₁, O₁₁ etc, which were often implicated in diarrhea. Flowerer even healty infants showed a great variation.
2) O₂₆, O₅₅ and O₁₁₁, called pathogenic E. coli, were isolated in diarrhea, whereas they could be found only in a very low rate or not at all in healthy infants.
3) Klebsiella form and intermediate form were often detected in diarrhea.
4) In many cases of diarrhea lactose slow fermenting or nonfermenting bacilli predominated in the flora.