Institutions are corrupt, not a whole country. Sure there is some level of infection between institutions but there is still a lot of a single one can do.
Corruption is a problem for sure, but I think incompetence and lack of initiative are far worse issues in the Brazilian executive.
How can a closed system that cannot be audited be considered trustworthy? After the voting happens, there's no physical proof of the vote.
Highly recommend reading this: https://dfaranha.github.io/project/evoting/
https://news.ycombinator.com/item?id=36543423
Fun fact: brazilians commonly express feelings of superiority towards civilized developed world nations because of these voting machines. They think americans, germans and everyone else in the world are living in the literal stone age due to their "archaic" voting processes just because it takes time to count the votes.
That said, organ transplants in Brazil are managed by the Federal Government (lists, etc), but the clinics and hospitals will usually be state or city made...
Brazil is pretty good at organ transplants, surprisingly.