A Honduran Ministry of health representative collects a blood sample from a young boy at Trujillo, department of Colón, Honduras, Aug. 07, 2017 for a joint tropical disease study with the Joint Task Force-Bravo Medical Element, the U.S. Naval Medical Research Unit No. 6 and the Uniformed Service University of the Health Sciences. The team, comprised of preventive medicine personnel, entomologists and students of the tropical medicine program, collected samples from August 6-11 in Trujillo.