Objectives The aim of this study was to compare the rate of parasitism and intestinal parasitism profiles of children who live in relatively proximal communities across the 5 municipalities of the Barranquilla metropolitan area, Colombia.
Methods In total, 986 fecal samples from children aged 1 to 10 were analyzed using a direct method (physiological saline and lugol) and the zinc sulfate flotation technique. A comparative analysis of the parasitism profiles between sampling locations (7 schools and 3 health centers providing growth and development services) was conducted using principal component analysis (PCA). The presence of Taenia solium antibodies was evaluated by the enzyme-linked immunosorbent assay method in 269 serum samples from the same group of children.
Results The overall prevalence of intestinal parasitism was 57.6% (range, 42.1%–77.6%) across the sampling areas. The prevalence of helminthiasis was between 4.1% and 23.7%, and that of intestinal protozoa was between 38.2% and 73.5%. PCA showed that the parasite profiles of each sampling location shared no common characteristics. A total of 3.0% of the serum samples were positive for T. solium antibodies.
Conclusion The intestinal parasitism profiles between relatively proximal sampling locations with similar geographic conditions were vastly different, indicating the need to study each small ecological niche on a localized scale to develop more cost-effective interventions for controlling intestinal parasitism.
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Objectives
The prevalence of <i>Clonorchis sinensis</i> infection was investigated among residents of the five major river basins, that is, Hangang, Nakdonggang, Seomjingang, Yeongsangang, and Geumgang River basins in Korea. Methods
From January to December 2007, a total of 31,268 stool samples were collected from 29 localities and examined by the formalin-ether sedimentation technique. Results
Intestinal parasite eggs and/or protozoan cysts were detected from 2957 (9.5%) inhabitants. Number of residents harbouring helminth eggs in the faeces was 2542 (8.1%) for <i>C. sinensis</i>, 255 (0.8%) for <i>Heterophyes</i> spp., 36 (0.1%) for <i>Echinostoma</i> spp., 30 (0.1%) for <i>Trichuris trichiura</i>, 8 (0.03%) for <i>Ascaris lumbricoides</i>, 7 (0.02%) for <i>Gymnophalloide seoi</i>, and 50 (0.02%) for <i>Trichostrongylus orientalis</i>. Number of residents harbouring protozoan cysts in the faeces was 133 (1.3%) for <i>Entamoeba</i> spp. and 50 (0.2%) for <i>Giardia lamblia.</i> The positive rates of <i>C. sinensis</i> in Nakdonggang, Seomjingang, Yeongsangang, Geumgang, and Hangang River basins were 12.2%, 9.5%, 3.3%, 3.0%, and 1.0%, respectively. The egg positive rate of <i>C. sinensis</i> was higher in male (10.6%) than in female (6.1%), and the age group of 50s had the highest positive rate (10.4%). Conclusion
The result of this study revealed little decrease in positive rate of <i>C. sinensis</i> compared with the result of southern endemic areas of Korea in 2006.
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