Rocky Mountain spotted fever U.S. new cases 1970-2019

In 1970, there were 380 new cases of Rocky Mountain spotted fever in the United States, compared to 5,207 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.

Number of new cases of Rocky Mountain spotted fever in the U.S. from 1970 to 2019*

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Release date

September 2022

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Region

United States

Survey time period

1970 to 2019

Supplementary notes

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.

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