The contributions of Brazilian physicians to knowledge of diseases caused by parasitic worms, during the second half of the nineteenth century, had distinct effects on three epistemic communities: Brazilian clinical anatomy, French medical geography, and the emerging field of medical parasitology. Accepting the heterogeneity of both the systems for legitimizing scientific facts and the epistemological practices observed by each discipline, the text provides a specific cartography of the period's medical knowledge, revealing the lines of force shaping the three disciplinary fields. The focus on the circulation, control and validation of medical knowledge reveals strong controversies and complicated negotiations between different epistemic communities.
medical geography; circulation of scientific facts; history of the biomedical sciences; Brazil