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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 103, No. 2, 2008, pp. 191-194
Bioline Code: oc08032
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 103, No. 2, 2008, pp. 191-194

 en Molecular identification of Rickettsia felis check for this species in other resources in ticks and fleas from an endemic area for Brazilian Spotted Fever
Oliveira, K.A.; Oliveira, L.S.; Dias, C.C.A.; Silva Jr, A.; Almeida, M.R.; Almada, G.; Bouyer, D.H.; Galvão, M.A.M. & Mafra, C.L.

Abstract

Rickettsioses are arthropod-borne diseases caused by parasites from the Order Rickettsiales. The most prevalent rickettsial disease in Brazil is Brazilian Spotted Fever (BSF). This work intends the molecular detection of those agents in ectoparasites from an endemic area of BSF in the state of Espírito Santo. A total of 502 ectoparasites, among them Amblyomma cajennense check for this species in other resources , Amblyomma σdubitatum check for this species in other resources (A. cooperi), Riphicephalus sanguineus check for this species in other resources , Anocentor nitens check for this species in other resources and Ctenocephalides felis check for this species in other resources , was collected from domestic animals and the environment and separated in 152 lots according to the origin. Rickettsia sp. was detected in pools of all collected species by amplification of 17kDa protein-encoding gene fragments. The products of PCR amplification of three samples were sequenced, and Rickettsia felis was identified in R. sanguineus and C. felis. These results confirm the presence of Rickettsia felis in areas previously known as endemic for BSF, disease caused by Rickettsia rickettsii. Moreover, they show the needing of further studies for deeper knowledge of R. felis-spotted fever epidemiology and differentiation of these diseases in Brazil.

Keywords
Rickettsia felis - Rickettsia rickettsii - Ctenocephalides felis - Brazilian Spotted Fever - R. felis-spotted fever - tick

 
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