Wayne State University Press, Human Biology: The Official Publication of the American Association of Anthropological Genetics, 4(76), p. 643-646, 2004
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The frequency distribution of the CCR5-Δ32, CCR2-64I, and SDF1-3'A alleles was studied in the urban population of Belém and in Afro-Brazilians, Amerindians, and Japanese immigrants in the state of Pará, Brazil. The results suggest that Amerindians may be genetically more susceptible to HIV-1 infection and disease progression than the other human groups studied.