Factors related to transmission of and infection with Schistosoma mansoni in a village in the South-eastern Region of Brazil

Memórias do Instituto Oswaldo Cruz

Martin Johannes Enk¹  Anna Carolina Lustosa Lima¹  Heliton Da Silva Barros¹  Cristiano Lara Massara²  Paulo Marcos Zech Coelho¹  Virginia Torres Schall¹ 

[1] ,Fiocruz Instituto de Pesquisas René Rachou Laboratório de Helmintologia e Malacologia MédicaBelo Horizonte MG ,Brazil

关键词: schistosomiasis;    Schistosoma mansoni;    socio-economic factors;    risk factors;    area of low transmission;    Brazil;   

DOI  :  10.1590/S0074-02762010000400037

来源: SciELO

【 摘 要 】

In this transversal study, factors related to infection with and transmission of Schistosoma mansoni were explored. Based on stool examinations of two Kato-Katz smears of a single sample, the prevalences of schistosomiasis and geohelminths were established. In a multivariable analysis, sets of demographic, socio-economic and water contact pattern variables were tested for strength of relation with infection. Males presented a 3.39-times higher risk for infection than females. The age groups between 10-19 years and 20-30 years showed risks of infection 7.1- and 7.5-times higher, respectively, than the control age group between 0-10 years. Individuals practicing leisure activities had a 1.96-times higher risk than those without these activities. The malacological survey identified snails of the species Biomphalaria glabrata, Biomphalaria straminea and Biomphalaria tenagophila. Two exemplars of B. glabrata (0.53%) proved positive for S. mansoni. The socio-economic improvements observed in the locality suggest a protective and preventive effect towards infection with schistosomiasis, which requires further investigation with a longitudinal and more detailed study design. Considering our findings, a proposal for an integrated control program should be based on two pillars: one horizontal, which involves social empowerment and health education, and another more vertical, which delivers treatment and infrastructure improvements.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License