The infrequent occurrence of Balantidium coli infection in man has prompted the careful study and reporting of a case that occurred during the past year in the service of one of us (A. D. Y.). Additional interest in the case was stimulated by the fact that to the best of our knowledge this is the first case to be reported from the state of Oklahoma. Moreover, as amebic and bacillary dysenteries are not uncommon in this semitropical country, we are glad to call attention to this additional member, evidently endemic to this locality.
Since the first definite description of the Paramecium coli and the report of a case by Malmsten1 and Loven in 1857, altogether less than 150 cases of the infection have been recorded in man. From a careful search of the literature by Strong2 in 1901. infections by the Balantidium coli up to that time numbered
YOUNG AD, WALKER OJ. BALANTIDIUM COLI INFECTION IN OKLAHOMA. JAMA. 1918;70(8):507–508. doi:https://doi.org/10.1001/jama.1918.02600080009002
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