Louis Pasteur and Dom Pedro II engaged in rabies vaccine development

Louis Pasteur is the renowned chemist and microbiologist of the 19th century involved in the development of the rabies vaccine. He worked with a researchers team in the laboratory, mainly Pierre Paul Emile Roux, and also physicians in the  clinical practice approach and the defense of Pasteur’s antirabies technique  in the Académie Nationale de Médecine,  Alfred Vulpian being the most notable. Pasteur´s his first studies on rabies are noted in his 1881 publication. But in 1885, he revealed that he had already immunized 50 dogs against rabies. However, in the meantime, he was looking for human subjects. The most polemic of this search involves the second and last emperor of Brazil, D. Pedro II, who was a patron of the arts and sciences and followed and supported the work of the great scientist. At Dom Pedro´s reign, the first Pasteur´s Institute was found in Rio de Janeiro, nine months before the Parisian one, also supported with Dom Pedro´s contribution. This article deals with the interaction between the two outstanding characters, especially in the development of prophylactic treatment against rabies, and with the utilitarian aspects of this vaccine researches development against  individual autonomy