Moraes-Filho J, Horta MC, Pacheco R de C, et al. Detection of antibodies against Rickettsia rickettsii in equines of the Zoonosis Control Center of São Paulo Municipality (CCZ/SP). Braz. J. Vet. Res. Anim. Sci. 2009;46(2):85-91. doi:10.11606/issn.1678-4456.bjvras.2009.26753