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Acta Trop. 2013 Jun;126(3):265-8. doi: 10.1016/j.actatropica.2013.02.018. Epub 2013 Mar 4.

Comparison of Kato-Katz, ethyl-acetate sedimentation, and Midi Parasep® in the diagnosis of hookworm, Ascaris and Trichuris infections in the context of an evaluation of rural sanitation in India.

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  • 1Environmental Health Group, London School of Hygiene and Tropical Medicine, Keppel Street, WC1E 7HT, London, UK.


The Kato-Katz, conventional ethyl-acetate sedimentation, and Midi Parasep(®) methods for diagnosing infection with soil-transmitted helminths were compared. The Kato-Katz technique gave the best overall diagnostic performance with the highest results in all measures (prevalence, faecal egg count, sensitivity) followed by the conventional ethyl-acetate and then the Midi Parasep(®) technique. The Kato-Katz technique showed a significantly higher faecal egg count and sensitivity for both hookworm and Trichuris as compared to the Midi Parasep(®) technique. The conventional ethyl-acetate technique produced smaller pellets and showed lower pellet mobility as compared to the Midi Parasep(®).

Copyright © 2013 Elsevier B.V. All rights reserved.

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