The film documents the old Rio de Janeiro and its great focus of diseases. Stresses the decisive importance of Oswaldo Cruz who creates Experimental Medicine in Brazil, believing that without sanitation, no undertaking could succeed. Rodrigues Alves then started the urbanization of Rio, against great interests.

Cast:Nilton Valério,

Genre:Documentary,

country:Brazil,

Production:Ministério da Cultura/Governo Federal, Departamento do Filme Cultural,