Rickettsiae-infected Ticks in an Endemic Area of Spotted Fever in the State of Minas Gerais, Brazil

Memórias do Instituto Oswaldo Cruz

Elba Regina Sampaio De Lemos¹  Raimundo Diogo Machado¹  Fernando Dias De Ávila Pires¹  Sérgio Lisboa Machado¹  Lígia Maria Cantarino Da Costa¹  José Rodrigues Coura¹ 

关键词: spotted fever;    ticks;    hemolymph test;    Brazil;   

DOI  :  10.1590/S0074-02761997000400005

来源: SciELO

【 摘 要 】

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

【 授权许可】

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