Department of Virology and Emerging Infections, Naval Medical Research Unit No. 6, Callao, Peru Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland Military Tropical Medicine Course, Navy Medicine Professional Development Center, Bethesda, Maryland Department of Parasitology, Naval Medical Research Unit No. 6, Callao, Peru School of Public Health and Management, Universidad Peruana Cayetano Heredia, Lima, Peru Department of Tropical Medicine, Tulane School of Public Health and Tropical Medicine, New Orleans, Louisiana Division of Global Health Protection, Centers for Disease Control and Prevention Kenya, Nairobi, Kenya Nicholas School of the Environment, Duke University, Durham, North Carolina