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E-mail: quelzanatta gmail. Society ascribes roles and expectations for people based on their sex. When the costs and benefits of each sex are different, people may have different motivations for having sons or daughters because children of different sexes are not substitutable. Sex preferences may then increase fertility, as women and couples who pursue a certain sex composition may progress to additional births. To understand how the social structure has been shaping sex preferences and fertility ideals, it is important to identify the characteristics of women with different preferences. Using responses to questions about an ideal number of children and their sex composition available in the Brazilian Demographic Health Survey of and , this paper provides evidence that a balanced sex preference exists among most Brazilians; some evidence of a secondary daughter preference is also found.
Background: Previous studies found a high prevalence of pathogens among female sex workers FSWs in the Amazon region, and established their parenteral and sexual transmission. This study estimated the prevalence of hepatitis C virus HCV infection and associated risk factors, and the frequency of HCV genotypes and resistance-associated substitutions RASs in this vulnerable group. Methods: Distinct sampling methods were used to access FSWs in cities and riverside communities in the Amazon region from to Three methods for HCV diagnosis were used to determine infection status.
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