Hookworm prevention, Sichuan, China, ca. 1920-19301920-1930Also included in the International Mission Photography Archive.Snapshots showing daily life of investigators of Cheeloo Graduate Division of Parasitology during hookworm study expeditions in West China "Examining hookworm patients for symptomatological studies" "Patients waiting for free santonin, carbon tetrachloride etc. at the door of our field dispensary." A group of local folk are gathered outside a building.still image