Prevalence of Rickettsia felis in the fleas Cthenocephalides felis felis and ctenocephalides canis from two Indian communities in São Paulo municipality, Brazil - Horta, Maurício Cláudio; Chiebao, Daniela Pontes; Ohara, Patrícia Miyuki; Souza, D. B; Ferreira, Fernando; Pinheiro, Sonia Regina; Labruna, Marcelo Bahia; Schumaker, Teresinha Tizu Sato (International Conference on Rickettsiae and Rickettsial Diseases, 2005)