The Scottish team found that vaccinations for Yellow Fever and Polio are recommended when traveling to Brazil, however they are not required. Vaccination is country specific. Players might want to ask the Brazilian consulate about this. When you contact the consulate, also check if you need any visa to go to Brazil.
How do we go about obtaining a visa for Brazil, the consulate website says we need an affidavit from the organising group making to apply for a visa to play amatuer sports.