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Human schistosomiasis in Ngamiland, Botswana.

L Andersen, P Magnussen, J S Wouters

    Tropical and Geographical Medicine
    |December 1, 1985
    PubMed
    Summary

    Schistosomiasis is a significant health concern in Ngamiland, with high infection rates of Schistosoma mansoni found in both school children and adult laborers in the Maun area. Prevalence decreased with age, suggesting recent introduction of the parasite in some locations.

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    Area of Science:

    • Medical Parasitology
    • Public Health
    • Tropical Medicine

    Background:

    • Schistosomiasis remains a persistent public health challenge in endemic regions.
    • Accurate prevalence data is crucial for effective control strategies in areas like Ngamiland.

    Purpose of the Study:

    • To re-evaluate the current schistosomiasis burden in Ngamiland, Botswana, with a focus on the Maun area.
    • To determine the prevalence of Schistosoma mansoni and Schistosoma haematobium infections in different population groups.

    Main Methods:

    • Cross-sectional study involving urinalysis and rectal snip examinations.
    • Inclusion of 552 primary school children and 213 adult laborers from the Maun area.
    • Additional examination of 102 pupils from Seronga village.

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    Main Results:

    • High prevalence of Schistosoma mansoni (80.3%) and low prevalence of Schistosoma haematobium (1.4%) in Maun pupils.
    • Significant Schistosoma mansoni infection rate (35.7%) among adult laborers in Maun.
    • Prevalence of S. mansoni in Seronga pupils was 69.6%.
    • Infection rates showed no significant difference between sexes but decreased with increasing age.

    Conclusions:

    • Schistosomiasis, particularly S. mansoni, poses a substantial health risk in the Ngamiland region.
    • The observed age-related decrease in prevalence may indicate recent parasite introduction or changing transmission dynamics.
    • Targeted interventions are necessary to control schistosomiasis in affected populations.