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April 9, 1938

ROCKY MOUNTAIN SPOTTED FEVER

Author Affiliations

Director, Rocky Mountain Laboratory, United States Public Health Service HAMILTON, MONT.

From the Rocky Mountain Laboratory of the National Institute of Health.

JAMA. 1938;110(15):1185-1188. doi:10.1001/jama.1938.62790150006011a
Abstract

The rickettsioses of man include a number of tick, louse, flea and mite borne diseases caused by infectious agents termed rickettsiae, the known characteristics of which suggest that they may be a group of microorganisms intermediate between bacteria and filtrable viruses. The literature and the classification of these rickettsial diseases have been and still are in a somewhat chaotic condition, owing, on the one hand, to the fact that an unavoidable lack of knowledge of the identity of the diseases observed has frequently necessitated that they be referred to by local or other equally unfortunate designations and, on the other, to premature attempts to classify them on the basis of geographic occurrence or with regard to the nature of their respective insect or arachnid vectors. Some semblance of order is now becoming apparent, however, as the result of more recent and more logical efforts to segregate them by the more

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