PREVALENCE OF ANTIBODY AGAINST VIRUSES IN THE TIRIYO, AN ISOLATED AMAZON TRIBE1

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Abstract
Black, F. L (Dept. Epidemiology and Public Health, Yale Univ. School of Medicine, New Haven, Conn. 06510), J. P. Woodall, A. S. Evans, H. Liebhaber and Gertrude Henle. Prevalence of antibody against viruses in the Tiriyo, an isolated Amazon tribe. Amer. J. Epid., 1970, 91: 430–438.—An isolated primitive population that has an unusually low rate of serologic reactions against several of the common acute viral infections has been identified in northern Brazil. The prevalence and distribution of antibodies against 38 different viruses have been compared in sera from this population. Except for rubella and poliovirus, those viruses that cause infections of limited duration seemed to have had very little currency in this population. On the other hand, the herpes group viruses and adenoviruses had affected the majority. Arbovirus antibodies were frequently found in adults, especially against Mayaro and yellow fever.

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