Rickettsiae detection in Amblyomma ticks (Acari: Ixodidae) collected in the urban area of Campinas city, SP

Revista da Sociedade Brasileira de Medicina Tropical

Superintendência de Controle de Endemias, São João da Boa Vista¹  Linhares, Arício Xavier¹  Schumaker, Teresinha Tizu Sato¹  Estrada, Dora Amparo¹  Souza, Celso Eduardo de¹  Rodrigues Neto, Elias José¹  Universidade Estadual de Campinas, Campinas¹  Universidade de São Paulo, São Paulo¹ 

关键词: Brazilian Spotted Fever;    Amblyomma spp;    Rickettsia bellii;    GltA gene;   

DOI  :  10.1590/S0037-86822006000100013

学科分类：农业科学（综合）

来源: Sociedade Brasileira de Medicina Tropical

【 摘 要 】

The city of Campinas is located in an endemic area for brazilian spotted fever in São Paulo State, where several cases have recently occurred. Capybaras have been associated with the cycle of this disease, for they present positive serology and serve as host for ticks of the genus Amblyomma, the main vectors of brazilian spotted fever. Ticks were colleted both from Capybaras and from the vegetation in the city park Lago do Café, located in the urban area of Campinas city, SP, a site associated with suspected human cases of brazilian spotted fever. The ticks collected were examinaded for the presence of rickettsiae using polymerase chain reaction and the haemolymph test. Through analysis of the gene gltA nucleotide sequence, adults of Amblyomma cajennense and Amblyomma cooperi were found to be infected with the non pathogenic Rickettsia bellii. However, no rickettsiae of the spotted fever group were detected. These results indicate that the role of capybaras as reservoirs of rickettsiae of the Spotted Fever group is still uncertain and further studies are required.

【 授权许可】

Unknown