Study design showing collection of fecal samples from and treatment of US-bound Myanmar refugees for hookworm infection, Thailand, 2012–2015. Myanmar refugees (n = 2,004) from 3 camps in Thailand (Mae La [camp 1], Mae Ra Ma Luang [camp 2], Mae La Oon [camp 3]) along the Myanmar–Thailand border were recruited to donate fecal samples and receive treatment (ivermectin and albendazole) for parasitic infections. T1 was the time of the resettlement medical exam, T2 occurred before camp departure, and T3 was a time after resettlement in the United States. Albendazole and ivermectin were given immediately after fecal collection at T1 and T2. T1, time point 1; T2, time point 2; T3, time point 3.