The first medical parasitology text– an exhaustive study of the parasites of man, the diseases associated with them and their treatment. Andry’s views were often ahead of his time. Unlike most of his contemporaries, he did not believe in the spontaneous generation of parasites but clearly stated that their seeds entered the body from outside sources and that some foods were particularly liable to contain them. English translation, London, 1701.

The first book specifically on orthopedics, which term Andry himself introduced. He advised attention to proper posture in the prevention and correction of spinal curvature; he had a practical knowledge of body mechanics. This is also the first book on diseases of children to include mention of chlorosis. English translation, 2 vols., 1743, reproduced in facsimile, Philadelphia, 1961. German translation, Berlin, 1744.