Molecular evidence for a spotted fever group Rickettsia species in the Tick Amblyomma longirostre in Brazil - Labruna, Marcelo Bahia; MCBride, Jere W.; Bouyer, Donald H.; Camargo, Luís Marcelo Aranha; Camargo, Erney Felicio Plessmann; Walker, David H. (Journal Medical Entomology, 2004)