GIS-facilitated spatial epidemiology of tick-borne diseases in coyotes (Canis latrans) in northern and coastal California

Janet E Foley, Erica V. Queen, Benjamin Sacks, Patrick Foley

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Ixodes pacificus is the main tick vector for transmission of Anaplasma phagocytophilum and Borrelia burgdorferi to large vertebrates in California. The present study was undertaken in I. pacificus-infested counties in California to examine spatial and temporal relationships among A. phagocytophilum and B. burgdorferi-exposed coyotes with vegetation type and climate. The overall A. phagocytophilum and B. burgdorferi seroprevalences were 39.5% (N = 215) and 18.9% (N = 148), respectively, with no association with sex. PCR for A. phagocytophilum and B. burgdorferi was negative in all blood and kidney samples. Increased seroprevalence was a positive function of rainfall. Ehrlichial seropositivity was increased in blue-oak foothill pine, montane hardwood, and redwood vegetation regions, and decreased in coastal sagebrush and cropland. Increased exposure to B. burgdorferi occurred in blue oak woodland.

Original languageEnglish (US)
Pages (from-to)197-212
Number of pages16
JournalComparative Immunology, Microbiology and Infectious Diseases
Volume28
Issue number3
DOIs
StatePublished - May 2005

Keywords

  • Anaplasma phagocytophilum
  • Anaplasmosis
  • Borrelia burgdorferi
  • Canis latrans
  • Coyote
  • GIS
  • Lyme disease

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Immunology
  • Microbiology
  • veterinary(all)

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