Antibodies for Rickettsia spp. in patients with negative serology for dengue virus, leptospirosis, and meningococcal disease in municipalities of São Paulo State, Brazil oleh Juliana Anacleto Cabral Prata, Celso Eduardo de Souza, Rodrigo Nogueira Angerami, Taíse Marongio Cotrim de Moraes Barbosa, Fabiana Cristina Pereira dos Santos, Silvia Colombo, Vânia Martins Fontes Del Guercio, Maria Rita Donalísio