JAMA. 1906;XLVII(1):36. doi:10.1001/jama.1906.25210010036001k.
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DEFINITION.  An acute infectious disease characterized by a somewhat sudden onset, with purpura hemorrhagica, terminating by lysis in from two to seven weeks.

ETIOLOGY.  The disease is also known as tick fever and occurs, as far as known, in Montana, Idaho and Wyoming. It seems to be more common along the course of the Snake River than elsewhere. Some attribute the disease to the bite of a tick which is one of a class of Acariden arachnids which attaches itself to the skin of man and other animals in which it buries its head and sucks the blood.Spotted fever is prevalent among bridge builders, carpenters, civil engineers and men of like occupation who are employed in building railroads, bridges, canals, etc. The theory is that these individuals sleep on the ground and are exposed to the bite of the tick. Whether the bite of the tick has anything to


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