Volume 72, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


, which causes human monocytotrophic ehrlichiosis (HME), is an important emerging tick-borne pathogen in the southeastern and southcentral United States. The endemnicity probability of and, by implication, locations with risk for HME, was predicted by using two modeling methods. This is first large-scale study to use geospatial analyses to estimate the distribution of , and it was conducted using data from a prototypic surveillance system that used white-tailed deer as natural sentinels. Analyses included the is serostatus for 563 counties from 18 states. Both kriging and logistic regression models provided very reliable portrayals of occurrence and predicted that distribution had good concordance with human case data. The integration of a deer surveillance system with geospatial analyses was useful in developing HME risk maps that will be useful for identifying high-risk areas for public health interventions such as prevention and control efforts.


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  • Received : 05 Oct 2004
  • Accepted : 14 Dec 2004

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