Silva, Ailton Domicio da, and Maria do Socorro Nantua Evangelista. 2010. “ Syndromic Surveillance: Etiologic Study of Acute Febrile Illness in Dengue Suspicious Cases With Negative Serology. Brazil, Federal District, 2008 ”. Revista Do Instituto De Medicina Tropical De São Paulo 52 (5): 237-42. https://revistas.usp.br/rimtsp/article/view/31344.