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Original Research ARTICLE

Front. Vet. Sci. | doi: 10.3389/fvets.2020.561592

Regional and local temporal trends of Borrelia burgdorferi and Anaplasma spp. seroprevalence in domestic dogs: contiguous United States 2013-2019 Provisionally accepted The final, formatted version of the article will be published soon. Notify me

 Jenna R. Gettings1*, Stella C. Watson Self2, Christopher S. Mcmahan2, D A. Brown2,  Shila K. Nordone3 and  Michael J. Yabsley1*
  • 1University of Georgia, United States
  • 2Clemson University, United States
  • 3Duke University, United States

In 2019, in the United States, over 220,000 and 350,000 dogs tested positive for exposure to Anaplasma spp. and Borrelia burgdorferi, respectively. To evaluate regional and local temporal trends of pathogen exposure we used a Bayesian spatio-temporal binomial regression model, analyzing serologic test results for these pathogens from January 2013 to December 2019. Regional trends were not static over time, but rather increased within and beyond the borders of historically endemic regions. Increased seroprevalence was observed as far as North Carolina and North Dakota for both pathogens. Local trends were estimated to evaluate the heterogeneity of underlying changes. A large cluster of counties with increased \textit{B. burgdorferi} seroprevalence centered around West Virginia, while a similar cluster of counties with increased Anaplasma spp. seroprevalence centered around Pennsylvania and extended well into Maine. In the Midwest, only a small number of counties experienced an increase in seroprevalence; instead, most counties had a decrease in seroprevalence for both pathogens. These trends will help guide veterinarians and pet owners in adopting the appropriate preventative care practices for their area. Additionally, B. burgdorferi and A. phagocytophilum cause disease in humans. Dogs are valuable sentinels for some vector-borne pathogens, and these trends may help public health providers better understand the risk of exposure for humans.

Keywords: Anaplasma spp, Borrelia burgdorferi, Public Health, vector-borne, Veterinary Epidemiology, Ticks & tick-borne pathogens

Received: 13 May 2020; Accepted: 17 Sep 2020.

Copyright: © 2020 Gettings, Watson Self, Mcmahan, Brown, Nordone and Yabsley. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence:
Dr. Jenna R. Gettings, University of Georgia, Athens, 30602, Georgia, United States, jrgettings@gmail.com
Dr. Michael J. Yabsley, University of Georgia, Athens, 30602, Georgia, United States, myabsley@uga.edu