Schistosomiasis mansoni: follow-up of control program based on parasitologic and serologic methods in a Brazilian community of low endemicity

A field survey on schistosomiais was carried out in 1998, in the municipality of Pedro de Toledo, a low endemic area in the state of São Paulo, Brazil. According to the parasitologic Kato-Katz method, the prevalence rate was 1.6%, with an infection intensity of 40.9 eggs per gram of stool. By the im...

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Main Authors: Lanny Cristina Burlandy-Soares, Luiz Cândido de Souza Dias, Hermínia Yohko Kanamura, Edward José de Oliveira, Ricardo Mario Ciaravolo
Format: Article
Language:English
Published: Fundação Oswaldo Cruz (FIOCRUZ) 2003-09-01
Series:Memorias do Instituto Oswaldo Cruz
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762003000600025
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author Lanny Cristina Burlandy-Soares
Luiz Cândido de Souza Dias
Hermínia Yohko Kanamura
Edward José de Oliveira
Ricardo Mario Ciaravolo
author_facet Lanny Cristina Burlandy-Soares
Luiz Cândido de Souza Dias
Hermínia Yohko Kanamura
Edward José de Oliveira
Ricardo Mario Ciaravolo
author_sort Lanny Cristina Burlandy-Soares
collection DOAJ
description A field survey on schistosomiais was carried out in 1998, in the municipality of Pedro de Toledo, a low endemic area in the state of São Paulo, Brazil. According to the parasitologic Kato-Katz method, the prevalence rate was 1.6%, with an infection intensity of 40.9 eggs per gram of stool. By the immunofluorescence test (IFT) for detection of IgG and IgM antibodies in the serum, IgG-IFT and IgM-IFT, respectively, prevalence indices of 33.2% and 33.5% were observed. To assess the impact of the schistosomiasis control program in the area, parasitologic and serologic data obtained in 1998, analyzed according to the age, sex, and residence zone, were compared to previous data obtained in a epidemiologic study carried out in 1980, when prevalence indices were of 22.8% and 55.5%, respectively by Kato-Katz and IgG-IFT. A significant fall of the prevalence was observed, indicating that the control measures were effective. Nonetheless, residual transmission was observed, demonstrating the need for a joint effort to include new approaches for better understanding the real situation and improving the control of the disease in low endemic areas.
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spelling doaj.art-57a9a8770deb4c1c9b7b48582613768d2023-09-02T22:11:03ZengFundação Oswaldo Cruz (FIOCRUZ)Memorias do Instituto Oswaldo Cruz0074-02761678-80602003-09-0198685385910.1590/S0074-02762003000600025Schistosomiasis mansoni: follow-up of control program based on parasitologic and serologic methods in a Brazilian community of low endemicityLanny Cristina Burlandy-SoaresLuiz Cândido de Souza DiasHermínia Yohko KanamuraEdward José de OliveiraRicardo Mario CiaravoloA field survey on schistosomiais was carried out in 1998, in the municipality of Pedro de Toledo, a low endemic area in the state of São Paulo, Brazil. According to the parasitologic Kato-Katz method, the prevalence rate was 1.6%, with an infection intensity of 40.9 eggs per gram of stool. By the immunofluorescence test (IFT) for detection of IgG and IgM antibodies in the serum, IgG-IFT and IgM-IFT, respectively, prevalence indices of 33.2% and 33.5% were observed. To assess the impact of the schistosomiasis control program in the area, parasitologic and serologic data obtained in 1998, analyzed according to the age, sex, and residence zone, were compared to previous data obtained in a epidemiologic study carried out in 1980, when prevalence indices were of 22.8% and 55.5%, respectively by Kato-Katz and IgG-IFT. A significant fall of the prevalence was observed, indicating that the control measures were effective. Nonetheless, residual transmission was observed, demonstrating the need for a joint effort to include new approaches for better understanding the real situation and improving the control of the disease in low endemic areas.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762003000600025Schistosoma mansonicontrollow endemic areaseroepidemiologySão PauloBrazil
spellingShingle Lanny Cristina Burlandy-Soares
Luiz Cândido de Souza Dias
Hermínia Yohko Kanamura
Edward José de Oliveira
Ricardo Mario Ciaravolo
Schistosomiasis mansoni: follow-up of control program based on parasitologic and serologic methods in a Brazilian community of low endemicity
Memorias do Instituto Oswaldo Cruz
Schistosoma mansoni
control
low endemic area
seroepidemiology
São Paulo
Brazil
title Schistosomiasis mansoni: follow-up of control program based on parasitologic and serologic methods in a Brazilian community of low endemicity
title_full Schistosomiasis mansoni: follow-up of control program based on parasitologic and serologic methods in a Brazilian community of low endemicity
title_fullStr Schistosomiasis mansoni: follow-up of control program based on parasitologic and serologic methods in a Brazilian community of low endemicity
title_full_unstemmed Schistosomiasis mansoni: follow-up of control program based on parasitologic and serologic methods in a Brazilian community of low endemicity
title_short Schistosomiasis mansoni: follow-up of control program based on parasitologic and serologic methods in a Brazilian community of low endemicity
title_sort schistosomiasis mansoni follow up of control program based on parasitologic and serologic methods in a brazilian community of low endemicity
topic Schistosoma mansoni
control
low endemic area
seroepidemiology
São Paulo
Brazil
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762003000600025
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