Prevalência da infecção pelo Schistosoma mansoni em dois municípios do Estado de Alagoas

Abstract

RESUMO ABSTRACTIntroduction: Preliminary studies indicate a probable schistosomiasis expansion in Alagoas. This work analyzes the occurrence of Schistosoma mansoni in students from two municipalities, located in the Mundaú and Paraíba rivers basins. Methods: The study group consisted of 690 students in the urban area, aged between seven and 15 years. A standardized socio-economic questionnaire was filled out and parasitological tests were used to diagnosis schistosomiasis (Lutz and Kato methods). Positive cases were treated and students and their families were lectured about health education. Results: The Schistosoma mansoni prevalence was 24.9%. The association between schistosomiasis and other parasitic diseases was significant in relation to trichuriasis (p <0.05). Only 50% of infected children lived in brick homes with sanitation and public water supply. Among them, 48.1% used to go usually to the water collections and 55.8% of them knew rivers snails. The concordance analysis between the Lutz and Kato methods showed disagreement in 54.2%, with greater sensitivity for the Lutz technique (76.4%). Conclusions: The indices obtained characterize the municipalities as hyperendemic areas, because prevalence rates over 5% are considered high according to the World Health Organization. The high prevalence observed here is also two times higher than that reported by the Brazilian Schistosomiasis Program Control.

Aspectos epidemiológicos e distribuição dos casos de infecção pelo Schistosoma mansoni em municípios do Estado de Alagoas, Brasil

“…A esquistossomose é considerada endêmica em 69% dos 102 municípios de Alagoas, com estimativas de que aproximadamente 2,5 milhões de pessoas vivam sob o risco da doença nestas áreas endêmicas 9 , uma situação próxima da realidade do Estado de Sergipe, conforme mostrado em uma publicação baseada nos dados do PCE de 2005 a 2008 identificando taxas de prevalência de 13,6%, 11,2%, 11,8% e 10,6%, respectivamente 11 .…”

“…Chama-se a atenção principalmente para os Municípios de Capela e Santana do Mundaú que se destacaram epidemiologicamente com uma prevalência de 22,8% e 10,1%, respectivamente, no ano de 2008 8 . Outro estudo publicado mostrou que Santana do Mundaú apresentou uma prevalência de 27,7% 9 .…”

Ectopic forms of schistosomiasis mansoni in the second macroregion of Alagoas: case series report and review of the literature

“…Sixty-nine percent of the municipalities within the state are high-endemic areas for schistosomiasis, with more than two and a half million people living at risk of the disease 8 . Among 18 states in the Northeast and Southeast, the highest positivity rates of parasitological tests for schistosomiasis were found in Alagoas 9 .…”

“…In addition, it is possible that an endemic expansion is occurring in the Alagoas municipalities located near the Mundaú and Paraíba river basins. The state is rich in water resources, and the main focuses of the disease are concentrated in the basins of these rivers 7,9 .…”

Association between Schistosomiasis mansoni and hepatitis C: systematic review

“…18,38,a In this country, six to eight million people are infected with Schistosoma mansoni and about 30 million people live under risk of infection. a The prevalence of Schistosomiasis mansoni (SM) can reach up to 27% of the population in some areas of Northeastern Brazil, 38 turning this country into a major schistosomiasis endemic area in the world.…”