"Candidatus Rickettsia asemboensis" in Rhipicephalus sanguineus ticks, Brazil

Abstract

"Candidatus Rickettsia asemboensis" is an obligate intracellular bacterium of the Rickettsiales order, genetically related to species belonging to the Rickettsia felis group, agents of flea-borne spotted fever. Here we report for the first time the detection of "Ca. R. asemboensis", a flea-associated organism, in Rhipicephalus sanguineus ticks. It is the first occurrence of this emerging bacterium in Brazil, which increases the geographical distribution of this R. felis-like agent.

Keywords: Flea-borne; Rickettsia felis-like; Rio Grande do Sul; Spotted fever.