Rickettsia parkeri Infection



Rickettsia parkeri has been isolated from Gulf Coast ticks (A. maculatum) in Alabama, Georgia, Mississippi, and Texas (Parker et al., 1939; Parker, 1940; Philip and White, 1955; Philip et al., 1978). It could further be detected in Gulf Coast ticks collected again from Georgia, Florida, Kentucky, Mississippi, Oklahoma and South Carolina (Sumner et al., 2007). Apart from the United States, R. parkeri has also been described as an emerging human pathogen in Uruguay (Venzal et al., 2004) and was furthermore detected in ticks and dogs (seroconversion) in Brazil (Silveira et al., 2007; Labruna et al., 2007). As the vector ticks, A. maculatum and A. triste and A. tigrinum are established in at least 11 other Latin American countries (Guglielmone et al., 2003), the distribution of R. parkeri in the Americas is likely continental (Pacheco et al., 2006; Tomassone et al., 2010).


Further information

  • Guglielmone AA, Estrada-Peña A, Keirans JE, et al.: Ticks (Acari: Ixodida) of the Neotropical Zoogeographic Region. 2003, Int. Consort. Ticks and Tick-borne Diseases, Atlanta, Houten, The Netherlands
  • Labruna MB, Horta MC, Aguiar DM, et al.: Prevalence of Rickettsia infection in dogs from the urban and rural areas of Monte Negro municipality, western Amazon, Brazil. Vector Borne Zoonotic Dis. 2007, 7, 249-55
  • Pacheco RC, Venzal JM, Richtzenhain LJ, et al.: Rickettsia parkeri in Uruguay. Emerg Infect Dis. 2006, 12, 1804-5
  • Parker RR: A pathogenic rickettsia from the Gulf Coast tick, Amblyomma maculatum. In: Proc. Third Int. Con. Microbiol., New York, NY 1940, 390-1
  • Parker RR, Kohls GM, Cox GW, et al.: Observations on an infectious agent from Amblyomma maculatum. Public Health Rep. 1939, 54, 1482-4
  • Philip C, White JS: Disease agents recovered incidental to a tick survey of the Mississippi Gulf Coast. J Econ Entomol. 1955, 48, 396-400
  • Philip RN, Casper EA, Burgdorfer W, et al.: Serologic typing of rickettsiae of the spotted fever group by microimmunofluorescence. J Immunol. 1978, 121, 1961-8
  • Silveira I, Pacheco RC, Szabó MP, et al.: Rickettsia parkeri in Brazil. Emerg Infect Dis. 2007, 13, 1111-3
  • Sumner JW, Durden LA, Goddard J, et al.: Gulf Coast ticks (Amblyomma maculatum) and Rickettsia parkeri, United States. Emerg Infect Dis. 2007, 13, 751-3
  • Tomassone L, Conte V, Parrilla G, et al.: Rickettsia infection in dogs and Rickettsia parkeri in Amblyomma tigrinum ticks, Cochabamba department, Bolivia. Vector Borne Zoonotic Dis. 2010, 10, 953-8
  • Venzal JM, Portillo A, Estrada-Peña A, et al.: Rickettsia parkeri in Amblyomma triste from Uruguay. Emerg Infect Dis. 2004, 10, 1493-5
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