Quantitative Complement Fixation Test in Schistosomiasis Mansoni

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  • Instituto Nacional de Endemias Rurais, Centro de Pesquisas de Belo Horizonte, Departmento de Higiene e Medicina Preventiva, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, Brazil
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Complement fixation tests with a purified extract of adult Schistosoma mansoni were performed by a quantitative technique with the sera of 216 children (10 to 15 years of age) and 84 adults (20 to 40 years of age) passing eggs of S. mansoni in their stools. The test was positive in 88.9% of the children and 89.3% of the adults. The titers obtained for the two age groups did not differ significantly.