New cases of Rocky Mountain spotted fever U.S. 2019

In 1970, there were 0.19 new cases of Rocky Mountain spotted fever per 100,000 population, compared to 1.6 cases per 100,000 population in 2019. This statistic shows the number of new cases of Rocky Mountain spotted fever per 100,000 population in the U.S. from 1970 to 2019.

New cases of Rocky Mountain spotted fever per 100,000 population in the U.S. from 1970 to 2019*

Characteristic	New cases per 100,000 population
2019	1.6
2018	1.71
2017	1.93
2016	1.33
2015	1.31
2014	1.18
2013	1.08
2012	1.44
2011	0.91
2010	0.65
2009	0.6
2008	0.85
2007	0.77
2006	0.8
2005	0.66
2004	0.6
2003	0.38
2002	0.39
2001	0.25
2000	0.18
1999	0.21
1998	0.14
1997	0.16
1996	0.32
1995	0.23
1994	0.18
1993	0.18
1992	0.2
1991	0.25
1990	0.26
1989	0.25
1988	0.25
1985	0.3
1980	0.52
1970	0.19

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Release date

September 2022

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Region

United States

Survey time period

1970 to 2019

Supplementary notes

* 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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