Article
Factors related to transmission of and infection with Schistosoma mansoni in a village in the South-eastern Region of Brazil
Registro en:
ENK, Martin Johannes et al. 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, Rio de Janeiro, v. 105, n. 4, p. 570-577, July 2010.
0074-0276
10.1590/S0074-02762010000400037
Autor
Enk, Martin Johannes
Lima, Anna Carolina Lustosa
Barros, Héliton da Silva
Massara, Cristiano Lara
Coelho, Paulo Marcos Zach
Schall, Virgínia Torres
Resumen
In this transversal study, factors related to infection with and transmission of Schistosoma mansoni were ex¬plored. 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 sug-gest 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