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Rocky Mountain spotted fever (or "black measles" because of its characteristic rash) was recognized in the early 1800s, and in the last 10 years of the 1800s (1890–1900) it became very common, especially in the Bitterroot Valley of Montana.
- 2 to 14 days after infection
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Although the construction of the first building of The Rocky Mountain Labs was completed in 1928, RML evolved as a result of research on Rocky Mountain spotted fever that began around 1900, in the Bitterroot Valley of Western Montana.
Jul 8, 2014 · Credit: CDC. Rocky Mountain spotted fever is a tickborne disease first recognized in 1896 in the Snake River Valley of Idaho. It was originally called “black measles” because of the look of its rash in the late stages of the illness, when the skin turns black.
In the late 1890s Rocky Mountain spotted fever was known as black measles, in reference to the dark purplish skin rash that developed in some affected persons. Discovery of the causative microbe in 1906 by American pathologist Howard T. Ricketts led to the understanding of other rickettsial diseases.
- The Editors of Encyclopaedia Britannica
Jul 17, 2023 · Rocky Mountain spotted fever (RMSF) is an acute febrile tick-borne illness caused by Rickettsia rickettsii. In North America, it is both the most severe and the most common rickettsial infection. Without prompt antibiotic treatment, mortality rates are as high as 20 to 30 percent.
- Jessica Snowden, Kari A. Simonsen
- 2023/07/17
1910. Pathologist Howard Ricketts discovered the organism that causes Rocky Mountain spotted fever before his death in 1910, providing the basis for treating the disease.
Rocky Mountain spotted fever (RMSF) is an illness you get from the bacteria Rickettsia rickettsii ( R. rickettsii). It spreads through tick bites. Symptoms start out similar to many other illnesses, including headache, fever and rash. But if not treated right away, RMSF can be life-threatening.
