Bancroftian filariasis in an endemic area of Brazil: differences between genders during puberty


Braga, C; Dourado, I; Ximenes, R; Miranda, J; Alexander, N; (2005) Bancroftian filariasis in an endemic area of Brazil: differences between genders during puberty. Revista da Sociedade Brasileira de Medicina Tropical, 38 (3). pp. 224-228. ISSN 0037-8682

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Abstract

Gender differences in susceptibility to infectious diseases have been observed in various studies. A survey was performed in a bancroftian filariasis endemic area in the city of Olinda, Brazil. All residents aged 5 years or older were examined by thick blood film. People aged 9 to 16 years were interviewed and also tested for filarial antigenaemia. Data were analyzed by contingency table methods and regression models. The risk of microfilaraemia for males was significantly higher. Among those aged 9 to 16 years, the analysis of gender and filariasis by age showed that boys from 15 to 16 years had a higher risk of infection than girls. No association was found between menarche and filariasis in girls. The data suggest that variations between gender in filariasis could result, at least in part, from an increase in susceptibility of men. This epidemiologic feature needs to be considered while formulating elimination plans.

Item Type: Article
Keywords: filariasis, gender differences, puberty, risk factors, Sex-differences, parasitic infection, hormones, susceptibility, immunity, testosterone, transmission, pregnancy, patterns, steroids, Adolescent, Adult, Age Factors, Animals, Antigens, Helminth, blood, Brazil, epidemiology, Child, Child, Preschool, Endemic Diseases, Female, Filariasis, diagnosis, epidemiology, Humans, Male, Middle Aged, Prevalence, Puberty, Questionnaires, Regression Analysis, Sex Factors, Wuchereria bancrofti, immunology
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Infectious Disease Epidemiology
Research Centre: Tropical Epidemiology Group
PubMed ID: 15895172
Web of Science ID: 230793400003
URI: http://researchonline.lshtm.ac.uk/id/eprint/13227

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