A novel Rickettsia infecting Amblyomma dubitatum ticks in Brazil - Almeida, A. P; Cunha, L. M; Bello, A. C. P. P; Cunha, A. P; Domingues, L. N; Leite, Romário Cerqueira; Labruna, Marcelo Bahia (Ticks and Tick-borne Diseases, 2011)