Release date represents the date figures were accessed.
This statistic was assembled from several editions of "Health, United States".
* Before 2010 data, cases of spotted fever rickettsiosis were reported as Rocky Mountain spotted fever (RMSF). Because serologic tests commonly used to diagnose RMSF are cross-reactive with spotted fever
rickettsial pathogens, some cases reported as RMSF may be disease caused by other spotted fever rickettsial infections. For that reason, since 2010, the term spotted fever rickettsiosis is used. Data include
confirmed and probable cases.
Citation formats
New cases of Rocky Mountain spotted fever in the U.S. 1970-2019
In 1970, there were *** new cases of Rocky Mountain spotted fever in the United States, compared to new cases in 2019. This statistic shows the number of new cases of Rocky Mountain spotted fever in the United States from 1970 to 2019.
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U.S. Department of Health and Human Services. (September 14, 2022). Number of new cases of Rocky Mountain spotted fever in the U.S. from 1970 to 2019* [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 05, 2026, from /statistics/186717/new-cases-of-rocky-mountain-spotted-fever-in-the-us-since-1970/
U.S. Department of Health and Human Services. "Number of new cases of Rocky Mountain spotted fever in the U.S. from 1970 to 2019*." Chart. September 14, 2022. ÌÇÐÄÆƽâ°æ. Accessed August 05, 2026. /statistics/186717/new-cases-of-rocky-mountain-spotted-fever-in-the-us-since-1970/
U.S. Department of Health and Human Services. (2022). Number of new cases of Rocky Mountain spotted fever in the U.S. from 1970 to 2019*. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 05, 2026. /statistics/186717/new-cases-of-rocky-mountain-spotted-fever-in-the-us-since-1970/
U.S. Department of Health and Human Services. "Number of New Cases of Rocky Mountain Spotted Fever in The U.S. from 1970 to 2019*." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 14 Sep 2022, /statistics/186717/new-cases-of-rocky-mountain-spotted-fever-in-the-us-since-1970/
U.S. Department of Health and Human Services, Number of new cases of Rocky Mountain spotted fever in the U.S. from 1970 to 2019* ÌÇÐÄÆƽâ°æ, /statistics/186717/new-cases-of-rocky-mountain-spotted-fever-in-the-us-since-1970/ (last visited August 05, 2026)
Number of new cases of Rocky Mountain spotted fever in the U.S. from 1970 to 2019* [Graph], U.S. Department of Health and Human Services, September 14, 2022. [Online]. Available: /statistics/186717/new-cases-of-rocky-mountain-spotted-fever-in-the-us-since-1970/
