The Argentine and Brazilian health authorities recommend yellow fever vaccination for at least 20 days before traveling to Paran, destinations in the state of Santa Catarina and south of Baha.
Although the health authorities in Brazil, Bolivia and Paraguay do not ask the Argentines for an international vaccination certificate to enter their territory, the Brazilian government and our health authorities recommend using the yellow fever vaccine for visit some regions and cities such as the North, Central West, Maranho, Minas Gerais, west and south of the State of Bahia and north of the state of Espirito Santo.
Cities for which they recommend being vaccinated:
Rorama, Amap, Amazonas, Couples, Acre, Rondnia, Mato Grosso, Mato Grosso Do Sul, Maranho, Tocantins, Gois, So Paulo, Paran, Santa Catarina, Ro Grande Do Sul, Piaui (west and south) south of Salvador Baha, Minas Gerais, Espritu Santo and Ro de Janeiro.
The use of the vaccine lasts forever, just as the certificate is issued.