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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 105, No. 4, 2010, pp. 570-577
Bioline Code: oc10098
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 105, No. 4, 2010, pp. 570-577

 en Factors related to transmission of and infection with Schistosoma mansoni check for this species in other resources in a village in the south-eastern region of Brazil
Enk, Martin Johannes; Lima, Anna Carolina Lustosa; Barros, Heliton da Silva; Massara, Cristiano Lara; Coelho, Paulo Marcos Zech & Schall, Virginia Torres


In this transversal study, factors related to infection with and transmission of Schistosoma mansoni check for this species in other resources 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 check for this species in other resources , Biomphalaria straminea check for this species in other resources and Biomphalaria tenagophila check for this species in other resources . 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.

schistosomiasis - Schistosoma mansoni - socio-economic factors - risk factors - area of low transmission - Brazil

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