This article analyses the construction of national pathologies in Brazil and Argentina between the first and the fourth decades of the 20th century. The scientific, social and political debate concerning Chagas disease and goiter are considered, as well as the relationships between this debate and the collective production of Brazilian and Argentinean nationalities. In this sense, the discovery
... [Show full abstract] of diseases of the Brazilian hinterland led to implementation of a health project with nationwide projection, whereas in Argentina this situation was met with a more moderate approach. This was because the main concern was related to diseases considered a product of civilisatiom and attributed to the immigration of foreigners.