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The August 26 decree changes previous requirements and now stipulates that foreign travelers entering Brazil by air, for a short stay of up to 90 days, must present proof of purchase of health insurance, in English or Portuguese, that is valid in Brazil for the entire period of the trip with minimum coverage of 30,000 Brazilian reais to an airline agent prior to boarding. Failure to provide this could result in the denial of entry by Brazilian authorities.
Please note that while the Brazilian government is requiring proof of health insurance in order to enter the country, Brazilian private hospitals do not often accept foreign health insurance and visitors to Brazil should expect to pay for private hospital services upfront and seek reimbursement from their travel insurance after treatment has finished.