Citizens from several countries are required to hold an entry VISA to enter Brazil. Please check the Brazilian Embassy or Consulate at http://www.itamaraty.gov.br/temas/embaixadas-e-consulados.
Please note also the information of required vaccines. Brazil follows the reciprocity principle concerning VISA requirements for foreign citizens from all of the other countries, which ask VISA for Brazilian citizens.
Details concerning the REQUIREMENTS to get a TEMPORARY VISA can be obtained with the Brazilian Embassy or Consulate in your country.