At a glance
- Ehrlichiosis annual reported cases 2000-2023
- Seasonality of ehrlichiosis
- States reporting ehrlichiosis
- People at risk of ehrlichiosis
- Other ehrlichiae infections
Epidemiology and Statistics
Due to the coronavirus disease 2019 (COVID-19) pandemic, 2019 and 2020 data from some jurisdictions may be incomplete.
Annual incidence of reported Ehrlichia chaffeensis ehrlichiosis United States 2018
Annual incidence of reported Ehrlichia chaffeensis ehrlichiosis United States 2019
Annual incidence of reported Ehrlichia chaffeensis ehrlichiosis United States 2020
Annual incidence of reported Ehrlichia chaffeensis ehrlichiosis United States 2021
Annual incidence of reported Ehrlichia chaffeensis ehrlichiosis United States 2022
Reported cases of E. ewingii and undetermined ehrlichiosis anaplasmosis US 2008-2022
Average reported cases of Ehrlichia chaffeensis ehrlichiosis by month of onset US 2018-2022
Number of reported cases of Ehrlichia chaffeensis ehrlichiosis US 2000-2022
Average annual incidence of reported Ehrlichia chaffeensis ehrlichiosis by age group US 2018-2022
Number of reported cases of E. ewingii and undetermined ehrlichiosis and anaplasmosis 2008 to 2023
Number of reported cases of E. chaffeensis ehrlichiosis 2000 to 2023
Incidence of reported E. chaffeensis ehrlichiosis geography 2023
Average number of reported cases of E. chaffeensis ehrlichiosis by month 2019-2023
Average annual incidence of reported E. chaffeensis ehrlichiosis by age group 2019-2023
Content Source
National Center for Emerging and Zoonotic Infectious Diseases (NCEZID)
About this page
Published: May 15, 2024
Updated: February 12, 2025
This page was last updated on this date. Updates may include minor edits, image changes, or other modifications to page content.
Reviewed: November 12, 2026
The information on this page was last reviewed by subject matter experts to ensure accuracy.