Maggiemaybe
We did actually go to Brazil first, then into Argentina, but nobody was checking. Fortunately we escaped the vaccine side effects. Ah well, if we’re ever lucky enough to go back and the same situation applies, we have our certificates ready and waiting!
We had Yellow Fever for Brazil (and numerous other meds, as we were going to the rainforest)
When we arrived the Brazilian Border Control were on a go slow, took nearly three hours to get though.
They scrutinised every page of our passports, and double checked all vaccine certificates.