Absence of Rickettsia rickettsii and Occurrence of Other Spotted Fever Group Rickettsiae in Ticks from Tennessee
- 1 September 2010
- journal article
- Published by American Society of Tropical Medicine and Hygiene in The American Journal of Tropical Medicine and Hygiene
- Vol. 83 (3), 653-657
- https://doi.org/10.4269/ajtmh.2010.09-0197
Abstract
Rocky Mountain spotted fever (RMSF) is the most common tick-borne illness in Tennessee. Little is known about the occurrence of R. rickettsii, the causative agent, in ticks in Tennessee. To better understand the prevalence and distribution of rickettsial agents in ticks, we tested 1,265 Amblyomma, Dermacentor, and Ixodes adult and nymphal ticks. Additionally, we tested 231 Amblyomma americanum larvae. Ticks were collected from 49 counties from humans, wild animals, domestic canines, and flannel drags. Spotted fever group rickettsiae (SFGR) DNA was detected by polymerase chain reaction (PCR) in 32% of adult and nymphal ticks. A total minimum infection rate of 85.63 was found in larval pools tested. Three rickettsial species, Rickettsia montana, Rickettsia amblyommii, and Rickettsia cooleyi were identified by molecular analysis. Rickettsia rickettsii was not detected. This study suggests that some RMSF cases reported in Tennessee may be caused by cross-reactivity with other SFGR antigenically related to R. rickettsii.Keywords
This publication has 31 references indexed in Scilit:
- Rickettsia parkeriinAmblyomma americanumTicks, Tennessee and Georgia, USAEmerging Infectious Diseases, 2009
- Tick-Borne Diseases in North Carolina: Is“Rickettsia amblyommii”a Possible Cause of Rickettsiosis Reported as Rocky Mountain Spotted Fever?Vector-Borne and Zoonotic Diseases, 2008
- Detection and Identification of Spotted Fever Group Rickettsiae in Dermacentor Species from Southern CaliforniaJournal of Medical Entomology, 2008
- Rickettsia amblyommiiInfectingAmblyomma americanumLarvaeVector-Borne and Zoonotic Diseases, 2008
- Rickettsia parkeriInfection after Tick Bite, VirginiaEmerging Infectious Diseases, 2007
- Detection of Rickettsia rickettsii and Bartonella henselae in Rhipicephalus sanguineus Ticks from CaliforniaJournal of Medical Entomology, 2007
- A Rickettsial Mixed Infection in a Dermacentor Variabilis Tick from OhioAnnals of the New York Academy of Sciences, 2006
- Tick-Borne Rickettsioses around the World: Emerging Diseases Challenging Old ConceptsClinical Microbiology Reviews, 2005
- Rickettsia parkeri:A Newly Recognized Cause of Spotted Fever Rickettsiosis in the United StatesClinical Infectious Diseases, 2004
- Molecular Characterization of a Novel Rickettsia Species from Ixodes scapularis in TexasEmerging Infectious Diseases, 1998