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Updated: Aug 8, 2025
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Intratracheal Inoculation of Fischer 344 Rats with Francisella tularensis
Published on: September 30, 2017
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Tularemia cases increase in the USA from 2011 through 2019
Alexandra Bishop1, Hsiao-Hsuan Wang2, Taylor G Donaldson3
1Department of Biology, Texas A&M University, College Station, TX, USA.
Current Research in Parasitology & Vector-Borne Diseases
|March 3, 2023
Summary
Tularemia cases in the USA increased from 2011-2019 compared to the previous decade. Surveillance data shows higher incidence in older adults and specific states, with seasonal peaks linked to tick activity.
Area of Science:
- Zoonotic diseases
- Epidemiology
- Public Health
Background:
- Tularemia is a significant bacterial zoonotic disease.
- Previous data covered US cases from 2001-2010.
Purpose of the Study:
- To analyze passive surveillance data for tularemia cases in the USA from 2011-2019.
- To identify trends in incidence, demographics, and seasonality.
Main Methods:
- Utilized passive surveillance data reported to the Centers for Disease Control and Prevention (CDC).
- Analyzed case numbers, incidence rates, geographical distribution, demographics, and seasonal patterns.
Main Results:
- 1984 tularemia cases were reported in the USA between 2011-2019.
- The average national incidence rate increased to 0.07 per 100,000 person-years.
- Arkansas, Missouri, Oklahoma, and Kansas reported the highest case numbers.
- White, non-Hispanic males and individuals aged 65+ showed higher incidence.
- Case distribution peaked in spring/summer, correlating with tick activity.
Conclusions:
- Tularemia incidence in the USA rose between 2011-2019.
- Targeted surveillance and public education on tick- and water-borne pathogens are crucial for prevention.
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