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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.
May 7, 2019 · Rocky Mountain spotted fever (RMSF) is a bacterial disease spread through the bite of an infected tick. Most people who get sick with RMSF will have a fever, headache, and rash. RMSF can be deadly if not treated early with the right antibiotic.
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. Although historically known from the Rocky Mountain region, the disease occurs throughout North America and in Central and South America.
- The Editors of Encyclopaedia Britannica
- Early Recognition of The Disease
- Identification of Rickettsia rickettsii
- Developing A Vaccine
Rocky Mountain spotted fever was first recognized in 1896 in the Snake River Valley of Idaho and was originally called black measles.It was a dreaded and frequently fatal disease that affected hundreds of people in this area.By the early 1900s, the recognized geographic distribution of this disease grew to encompass parts of the United States as far north as Washington and Montana and as far south as California, Arizon...Howard T. Ricketts was the first to establish the identity of the infectious organism that causes Rocky Mountain spotted fever.He and others characterized the basic epidemiologicalfeatures of the disease, including the role of tick vectors.Their studies found that Rocky Mountain spotted fever is caused by a tick borne, gram-negative coccobacillus that was named Rickettsia rickettsii,This species is maintained in nature by a complex cycle involving ticks and mammals; humans are considered to be accidental hosts and are not involved in the natural transmission cycle of this path...Research reawakened in 1922 in western Montana — in the Bitter Root Valley; Hamilton, Montana — after the governor's daughter and son-in-law died of the fever.Past assistant surgeon R.R. Spencer of the hygienic laboratory of the US Public Health Service was ordered to the region and led a research team at an abandoned local schoolhouse.In 1924, Spencer inoculated himself with a large dose of ground wood ticks and weak carbolic acid. The vaccine was effective.Three of the researchers involved in the project, Gettinger, Cowan and Kerlee, would all die from the fever during their research efforts.Jan 1, 2000 · Abstract. Rocky Mountain spotted fever (RMSF), a potentially fatal tick-borne infection caused by Rickettsia rickettsii, is considered a notifiable condition in the United States. During 2000 to 2007, the annual reported incidence of RMSF increased from 1.7 to 7 cases per million persons from 2000 to 2007, the highest rate ever recorded.
- John J. Openshaw, David L. Swerdlow, John W. Krebs, Robert C. Holman, Eric Mandel, Alexis Harvey, Da...
- 10.4269/ajtmh.2010.09-0752
- 2010
- Am J Trop Med Hyg. 2010 Jul; 83(1): 174-182.
People also ask
Where is Rocky Mountain spotted fever most common?
When was Rocky Mountain spotted fever discovered?
What causes Rocky Mountain spotted fever (RMSF)?
Is Rocky Mountain spotted fever a rickettsial disease?
Fewer than 5,000 cases are reported a year in the United States, most often in June and July. It has been diagnosed throughout the contiguous United States, Western Canada, and parts of Central and South America. Rocky Mountain spotted fever was first identified in the 1800s in the Rocky Mountains.
Rocky Mountain spotted fever (RMSF) is caused by Rickettsia rickettsii and transmitted by ixodid ticks. Symptoms are high fever, severe headache, and rash. (See also Overview of Rickettsial and Related Infections.) Rocky Mountain spotted fever is a rickettsial disease. Epidemiology of RMSF
