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Diseases » Rickettsia » Incidence

Incidence Statistics for Types of Rickettsia

The information below shows a list of types of Rickettsia, with information as to the annual incidence of each of these types of Rickettsia. Estimates of the people affected each year are calculated based on the available statistics.

Incidence Statistics for Types of Rickettsia


Incidence Estimate

US people estimate

Statistic Used for Calculation

Typhus N/A N/A No information
Q fever approx 1 in 25,641 or 0.00% or 10,608 people in USA 10,608 3.9 new cases per 100,000 population of Q Fever were notified in Australia 2002 (Yohannes K, Roche P, Blumer C et al. 2004, Australia’s Health 2004, AIHW)
Rocky Mountain Spotted fever approx 1 in 469,775 or 0.00% or 578 people in USA 578 579 annual cases notified in USA 1999 (MMWR 1999)

Types of Rickettsia

For more information about types of Rickettsia, refer to our section on types of Rickettsia.

About incidence:

The medical term 'incidence' of Rickettsia usually refers to the annual diagnosis rate of new cases of Rickettsia. Prevalence is a different medical disease measure that refers to the estimated population of people who are managing Rickettsia at any given time (e.g. prevalence includes people who have had a medical condition for a long time). For more information on prevalence and incidence statistics, see about prevalence and incidence statistics.


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