[Rickettsiae detection in Amblyomma ticks (Acari: Ixodidae) collected in the urban area of Campinas City, SP].

Abstract:

: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 collected 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 examinated 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.

journal_name

Rev Soc Bras Med Trop

authors

Estrada DA,Schumaker TT,Souza CE,Rodrigues Neto EJ,Linhares AX

doi

10.1590/s0037-86822006000100013

subject

Has Abstract

pub_date

2006-01-01 00:00:00

pages

68-71

issue

1

eissn

0037-8682

issn

1678-9849

pii

S0037-86822006000100013

journal_volume

39

pub_type

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