Detection and molecular characterization of rickettsiae in humans, potential vectors and domestic animals of southeastern Brazil. / Detecção e caracterização molecular de riquétsias em humanos, potenciais vetores e animais domésticos da região sudeste do Brasil.

AUTOR(ES)

Flávia de Sousa Gehrke

DATA DE PUBLICAÇÃO

2010

RESUMO

This project aimed to diagnose rickettsial diseases using molecular analysis methods on human, tick, flea, dog and horse samples from endemic areas in the States of São Paulo (SP) and Rio de Janeiro (RJ). A diagnosis of Rickettsia rickettsii infecting Amblyomma cajennense and humans in the State of SP was made, indicating that this is the only species responsible for the disease. Rickettsia conorii was diagnosed in a patient from Portugal. In RJ, Rickettsia felis was detected in Ctenocephalides felis and Am. cajennense, while R. rickettsii was detected in Amblyomma aureolatum, Am. cajennense, Anocentor nitens, Boophilus microplus, Ct. felis and Rhipicephalus sanguineus. In the State of RJ the minimum frequency of infected vectors presented higher values than those recorded in other regions of the country. The involvement of some of these species in the bacterium cycle has been demonstrated for the first time. R. rickettsii was diagnosed in dogs and horses indicating the importance of livestock in the maintenance cycle of rickettsial infection.

ASSUNTO(S)

rickettsiaceae rickettsia rickettsii rickettsia rickettsii rickettsiaceae epidemiologia veterinária humanos veterinary epidemiology fever tick domestic animals rickettsial spotted fever group animais domésticos febre do carrapato human riquétsias do grupo da febre maculosa

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