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  1. Urban schistosomiasis : Morbidity, sociodemographic characteristics and water contact patterns predictive of infection.

    Article - En anglais

    Background

    Schistosomiasis (Schistosoma mansoni) is classically described as a rural disease that occurs in areas with poor sanitary conditions.

    This cross-sectional study was undertaken in a suburban area of a large industrialized city in Brazil (Belo Horizonte), aiming at examining epidemiological characteristics of schistosomiasis in an urban setting.

    Methods

    A simple random sample of 658/1896 dwellings was selected and 3049/3290 (92.7%) residents were submitted to stool examination.

    Of 518 eligible infected cases and 518 uninfected controls, 87.1% and 89.8% participated in the study, respectively.

    Results

    The prevalence of S. mansoni infection was 20%, predominantly low egg counts in stools ; no cases of splenomegaly were found.

    Signs and symptoms associated with infection were bloody stools (odds ratio [OR]=8.0) and hardened palpable liver at the middle clavicular and at the middle sternal line (OR=5.5 and 8.0, respectively).

    Sociodemographic variables and water contacts predictive of infection were age (10-19 and =20 yrs ; OR=7.1 and 3.3, respectively), gender (male ; OR=3.1), contacts for swimming and/or playing (twice a month or less and more than twice a month ; OR=2.2 and 3.0, respectively) and residence in Belo Horizonte (born in the City ; OR=2.5).

    Ninety per cent of dwellings had a piped water supply ; no association between water supply and infection was found.

    Conclusion

    (...)

    Mots-clés Pascal : Schistosomiase, Trématodose, Helminthiase, Parasitose, Infection, Zone urbaine, Statut socioéconomique, Hygiène, Eau, Morbidité, Homme, Epidémiologie, Brésil, Amérique du Sud, Amérique

    Mots-clés Pascal anglais : Schistosomiasis, Trematode disease, Helminthiasis, Parasitosis, Infection, Urban area, Socioeconomic status, Hygiene, Water, Morbidity, Human, Epidemiology, Brazil, South America, America

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 97-0080514

    Code Inist : 002B05E03C1. Création : 21/05/1997.