Article
Rickettsiae-infected Ticks in an Endemic Area of Spotted Fever in the State of Minas Gerais, Brazil
Registro en:
LEMOS, Elba Regina Sampaio de et al. Rickettsiae-infected Ticks in an Endemic Area of Spotted Fever in the State of Minas Gerais, Brazil. Memórias do Instituto Oswaldo Cruz, Rio de Janeiro, v. 92, n. 4, p. 477-481, July/Aug. 1997.
0074-0276
10.1590/S0074-02761997000400005
1678-8060
Autor
Lemos, Elba Regina Sampaio de
Machado, Raimundo Diogo
Pires, Fernando Dias de Ávila
Machado, Sérgio Lisboa
Costa, Lígia Maria Cantarino da
Coura, José Rodrigues
Resumen
A study on tick-borne rickettsiosis was developed in the county of Santa Cruz do Escalvado, State of Minas Gerais, Brazil, where a clinical case of the disease, confirmed by necropsy, had been reported. Of the 1,254 ticks collected, 1,061 belonged to the Amblyomma genus, 57 to the Rhipicephalus sanguineus species, 81 to Boophilus microplus, and 46 to Anocentor nitens. The hemolymph test associated with Giménez staining showed that 18 of the 221 A. cajennense specimens, 1 of the 16 R. sanguineus, 1 of the 22 B. microplus, 3 of the A. nitens, and 1 of the A. ovale contained rickettsia-like microorganisms. Only 3 A. cajennense ticks were positive under direct immunofluorescence. A. cajennense was the only species found on humans.