Walter Reed Army Medical Center. Walter Reed Army Institute of Research. Washington, D.C.; Universidade de Brasilia. Faculdade de Ci?ncias da Sa?de. Bras?lia, DF, Brazil.; Gorgas Memorial Laboratory. Miami, Fl?rida, USA.; Minist?rio da Sa?de. Funda??o Servi?os de Sa?de P?blica. Instituto Evandro Chagas. Bel?m, PA, Brasil.; Results of entomological and vertebrate host investigations made during dual outbreaks of...