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ARTICLE |

THE STUDY OF "ROCKY MOUNTAIN SPOTTED FEVER" (TICK FEVER?) BY MEANS OF ANIMAL INOCULATIONS.A PRELIMINARY COMMUNICATION.

H. T. RICKETTS, M.D.
JAMA. 1906;XLVII(1):33-36. doi:10.1001/jama.1906.25210010033001j.
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ABSTRACT

I arrived in Missoula, Montana, April 21, 1906, equipped for the bacteriologic and hematologic study of the so-called Rocky Mountain spotted fever and for the study of the infectious agent by means of animal inoculations.

Although the period during which the disease occurs is very limited and the cases very few, it was possible to carry the investigations to a point which affords encouragement for the ultimate solution of some of the problems involved. At this time I wish to give a brief and preliminary presentation of the most important results obtained this year, reserving for a future date a more detailed interpretation of the experiments, when the bacteriologic and histologic studies will have been completed.

It will be remembered that the confidence which was at first manifested in the report of Wilson and Chowning concerning the presence of a piroplasma in the blood and erythrocytes of infected patients was

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