PMID: 11931023Apr 5, 2002Paper

Prevalence of the agent of human granulocytic ehrlichiosis in Ixodes scapularis (Acari: Ixodidae) in the coastal southeastern United States

Journal of Medical Entomology
Q Q FangJody Sapp

Abstract

Human granulocytic ehrlichiosis (HGE) is an emerging tick-borne disease recently recognized in the United States. The blacklegged tick, Ixodes scapularis Say, is the principle vector in the eastern United States. The disease has been commonly reported in the northeastern and upper midwestern states; however, suitable vectors and reservoir hosts exist in the southeast. To assay the prevalence of the HGE agent in vector ticks, we screened 818 individual I. scapularis from 15 locations in South Carolina, Georgia, and Florida using nested polymerase chain reaction, which targets the HGE agent 16S rRNA gene. Prevalence among locations ranged from 0 to 20%. The overall average prevalence of 15 sites was 1.6% (n = 818). Verification by sequencing the 16S rDNA from the positive samples showed 99.8-100% nucleotide identities with the sequences of the HGE agent in GenBank. These results were supported by the phylogenetic analysis using 16S rDNA sequences.

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Citations

Mar 17, 2004·Vector Borne and Zoonotic Diseases·Michael L Levin, Danielle E Ross
Nov 1, 2008·Vector Borne and Zoonotic Diseases·Mark P NelderWilliam Wills
Jan 5, 2012·Vector Borne and Zoonotic Diseases·Dawn M Roellig, Quentin Q Fang
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Jan 15, 2003·Clinical Microbiology Reviews·Christopher D Paddock, James E Childs
Mar 1, 2005·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Michael J YabsleyWilliam R Davidson
Jun 20, 2013·International Journal of Medical Sciences·Kerry L ClarkShirley Hartman
May 23, 2003·The Journal of Parasitology·Christopher H GorhamLance A Durden
Jul 12, 2019·Scientific Reports·Elizabeth R GleimMichael J Yabsley
May 3, 2012·Journal of Vector Ecology : Journal of the Society for Vector Ecology·Kerry L Clark
Feb 10, 2006·Journal of Medical Entomology·John R MoriarityGregory A Dasch

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