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Updated: Oct 26, 2025

Author Spotlight: Controlled Human Exposure Model for Tick Research and Lyme Disease Studies
Published on: December 1, 2023
The epidemiology of human ehrlichiosis in Texas, 2008-2017
Timothy A Erickson1, Bonny Mayes2, Kristy O Murray1
1Department of Pediatrics, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, United States; National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, United States; William T. Shearer Center for Human Immunobiology, Baylor College of Medicine, Houston, TX, United States.
Abstract:
Tick-borne diseases in the United States, including ehrlichiosis, represent a growing public health problem. The purpose of this study was to examine the contemporary epidemiology of human ehrlichiosis in Texas by analyzing cases reported to the Texas Department of State Health Services. In Texas, 101 cases of ehrlichiosis were reported during 2008-2017. We observed geographic grouping of cases as well as an increasing trend of reported cases occurring annually from 2009 to 2017. Notably, 27 cases occurred in 2008 in south Texas with unique patient characteristics in that they were younger, less likely to be hospitalized, and presented with disease earlier in the year than typically seen. Our findings highlight the importance of disease awareness and prevention of tick bites as well as further investigation into transmission risk and future disease patterns.
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