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Brazil

Indigenous peoples of Brazil make up 0.4% of Brazil's population, or about 817,000 people, but millions of Brazilians are mestizo or have some Indigenous ancestry. Indigenous peoples are found in the entire territory of Brazil, although in the 21st century, the majority of them live in Indigenous territories in the North and Center-Western parts of the country. On 18 January 2007, Fundação Nacional do Índio (FUNAI) reported that it had confirmed the presence of 67 different uncontacted tribes in Brazil, up from 40 in 2005. Brazil is now the nation that has the largest number of uncontacted tribes, and the island of New Guinea is second.

The Washington Post reported in 2007, "As has been proved in the past when uncontacted tribes are introduced to other populations and the microbes they carry, maladies as simple as the common cold can be deadly. In the 1970s, 185 members of the Panara tribe died within two years of discovery after contracting such diseases as flu and chickenpox, leaving only 69 survivors."