The University of Texas Medical Branch. Departments of Microbiology & Immunology. Galveston, TX, USA / The University of Texas Medical Branch. Center for Tropical Diseases. Galveston, TX, USA.; The University of Texas Medical Branch. Departments of Pathology. Galveston, TX, USA.; Minist?rio da Sa?de. Funda??o Nacional de Sa?de. Instituto Evandro Chagas. Bel?m, PA, Brasil.; Minist?rio da Sa?de. Funda??o Nacional...