See On the Amazon rainforest Vaccination versus yellow fever and taking anti-malaria medication could possibly be needed For anyone who is travelling into the Midwestern point out of Mato Grosso or the northern (Amazon) locations. If you're arriving from Peru, Colombia or Bolivia, proof of yellow fever vaccination is needed https://theappcode.net/userinfo.php?action=view&op=userinfo&com=profile&user=kareem.kirch.451692