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Rocky Mountain spotted fever, form of tick -borne typhus first described in the Rocky Mountain section of the United States, caused by the bacterium Rickettsia rickettsii and transmitted by certain species of ticks. Although historically known from the Rocky Mountain region, particularly the U.S. states of Idaho and Montana, today Rocky ...
- The Editors of Encyclopaedia Britannica
Jan 11, 2024 · Dashboard Data Files. Last Reviewed: January 11, 2024. Source: Centers for Disease Control and Prevention , National Center for Emerging and Zoonotic Infectious Diseases (NCEZID) , Division of Vector-Borne Diseases (DVBD) Rocky Mountain spotted fever (RMSF) is a bacterial disease spread through the bite on an infected tick.
Jul 8, 2014 · 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. It was a dreaded, often fatal disease, affecting hundreds of people in Idaho.
Apr 1, 2012 · Introduction. Rocky Mountain spotted fever (RMSF) came to national attention as an endemic disease of the Bitter Root Valley, Montana during the turn of the last century. 1– 3 This highly virulent disease affected mainly working men during the summer months, with a case-fatality rate (CFR) upwards of 70%. 4 This disease was also recognized in other states in the Rocky Mountains with similar ...
- F. Scott Dahlgren, Robert C. Holman, Christopher D. Paddock, Laura S. Callinan, Jennifer H. McQuisto...
- 10.4269/ajtmh.2012.11-0453
- 2012
- 2012/04/04
Sep 13, 2017 · In the United States, RMSF is characteristically a rare and sporadically distributed disease: most cases are reported from mid-Atlantic states . Recently, however, epidemic levels of RMSF have been described for areas of eastern and southern Arizona and northern Mexico ( 3 – 6 ).
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Rocky Mountain spotted fever (RMSF) is a serious illness you get from a tick bite. It’s caused by the bacterium Rickettsia rickettsii. Symptoms include a high fever and headache. Rash may start three or more days after other symptoms. RMSF can be life-threatening if not treated quickly with antibiotics. RMSF is found in most states in the U.S.
Rocky Mountain spotted fever occurs mainly from March to September, when adult ticks are active and people are likely to be in tick-infested areas. In the southern states, the disease may occur throughout the year. The infection is more common among people who spend a lot of time in tick-infested areas and among children younger than 15.
