| Nomination for Nobel Prize in Physiology or Medicine | |
| Year: | 1922 |
| Number: | 17 - 0 |
| Motivation: | Carlos Chagas, director, Oswaldo Cruz Institute, BR, was nominated for research on a human trypanosome. Nominator was Cypriano de Treitas, prof in Petrópolis, BR. Nomination was declared invalid by the Nobel Committee. |