PMID: 2513633Mar 1, 1989Paper

Schistosomiasis mansoni in the municipality of Pedro de Toledo (São Paulo, Brazil) where the Biomphalaria tenagophila is the snail host. I--Prevalence in human population

Revista Do Instituto De Medicina Tropical De São Paulo
L C DiasG J Ishihata

Abstract

Due to the scarce information about the epidemiological features of schistosomiasis in which the vector is Biomphalaria tenagophila, an investigation was carried in Pedro de Toledo in 1980 where such peculiarity is observed. Stool examinations (Kato-Katz method) were performed in 4,741 individuals (22.8% positive to Schistosoma mansoni eggs) of this 583 had previously received chemotherapy and 4,158 remainders, untreated. The schistosomiasis prevalence in those two groups where respectively 31.7% and 21.6%. Epidemiological investigation showed that 83.6% were autochthonous cases from the studied area: the autochthonous prevalence rate, and the intensity of infection in the untreated autochthonous cases were higher in males than in females; the intensity in the latter untreated group was low, 58.5 eggs/g feces (geometric mean). Moreover, according to the age groups the intensity of infections correlated well (rs = 0.745) with the prevalence rates. Schistosomiasis was verified to occur mostly during the leisure time and by the use of water streams for housework in rural zone. Only 0.4% out of 1,137 snails was positive for S. mansoni cercariae, apparently unchanged from the 1978 study when the human prevalence was 12.0%. The studi...Continue Reading

References

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Citations

Aug 1, 1993·Social Science & Medicine·E H Michelson
Jul 18, 2014·European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology·M C C Espirito-SantoR C B Gryschek
Nov 5, 2003·Memórias do Instituto Oswaldo Cruz·Lanny Cristina Burlandy-SoaresRicardo Mario Ciaravolo
Aug 30, 2012·Revista Da Sociedade Brasileira De Medicina Tropical·Teiliane Rodrigues CarneiroFernando Schemelzer Moraes Bezerra
Nov 12, 2002·Memórias do Instituto Oswaldo Cruz·Horacio Manuel Santana TelesFabiana Zacharias
Mar 1, 1991·Revista Do Instituto De Medicina Tropical De São Paulo·O Marçal JúniorA Etzel
Jul 1, 1993·Revista Do Instituto De Medicina Tropical De São Paulo·O Marçal JúniorL C Dias
Sep 1, 1994·Revista Do Instituto De Medicina Tropical De São Paulo·R E da SilvaL F Frederico
Apr 18, 2003·Cadernos de saúde pública·Edward José de OliveiraRicardo Mário de Carvalho Ciaravolho

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