22 research outputs found

    Relationship between local population density and intensity of <i>S. mansoni</i> infection.

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    <p>Scatter plot showing positive association between intensity of <i>S. mansoni</i> infection and population density. The population density and the intensity were expressed as the number of people within a radius of 1 km and log<sub>10</sub> (epg+1), respectively.</p

    Map of the study area.

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    <p>A black rectangle in the national map indicates the position of the area shown in the main map frame. Small squares in the main frame indicate house of 310 schoolchildren. Dotted red circles indicate the extent of the area from which children attend the schools.</p

    Intensity of <i>S. mansoni</i> infection among primary school children in Mbita, Kenya.

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    <p>The intensity of <i>S. mansoni</i> infection was mapped at the household level. According to the WHO guidelines, <i>S. mansoni</i> infection was categorized as: negative, light (1–99 epg), moderate (100–399 epg) or heavy (≥400 epg) infection. The number in the parentheses shows the geometric mean of the number of eggs in each school. Population density of each 500 m grid is shown in the background. The red solid circle indicates the unadjusted high risk cluster whereas the orange dotted circle indicates the cluster adjusted for potential risk factors as follows: sex, population density, house structure and latrine availability.</p

    Clustering of <i>S</i>. <i>haematobium</i> and hookworm infections in the study area.

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    <p>The intensity was expressed as log<sub>10</sub> (N + 1). In the left panel, <i>S</i>. <i>haematobium</i> was categorized based on WHO guidelines as: negative, light (1–49 eggs/10 ml urine) and heavy (≥50 eggs/10 ml urine) represented by white, yellow and red dots respectively. The red and white cycles show high and low risk clusters respectively. In the right panel, hookworm was grouped into negative, light (1–1999) and moderate (2000–3999) indicated by white, yellow and brown dots respectively. High risk cluster shown by red circle while the large white cycle represents the low infection cluster.</p
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