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Related Experiment Videos

Quantitative egg counts in schistosomiasis surveys.

R A Braun-Munzinger1

  • 1GTZ Bilharziasis Control Project, BP 502, Mahajanga-401, Madagascar.

Parasitology Today (Personal Ed.)
|March 1, 1986
PubMed
Summary

Recent World Health Organization (WHO) guidelines for schistosomiasis surveys may be flawed. This study highlights technical issues with using nytrel filters for accurate schistosome egg counts in urine filtration methods.

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Egg viability in urinary schistosomiasis. III. Repeatability and reproducibility of new methods.

The Journal of tropical medicine and hygiene·1993
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Egg viability in urinary schistosomiasis. II. Simplifying modifications and standardization of new methods.

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Egg viability in urinary schistosomiasis. I. New methods compared with available methods.

The Journal of tropical medicine and hygiene·1993
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Repeatability and reproducibility of egg counts of Schistosoma haematobium in urine.

Tropical medicine and parasitology : official organ of Deutsche Tropenmedizinische Gesellschaft and of Deutsche Gesellschaft fur Technische Zusammenarbeit (GTZ)·1992
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Quality control in schistosomiasis programmes.

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False epidemiological results from the bulk transport of dried filter papers in urinary schistosomiasis.

Tropical medicine and parasitology : official organ of Deutsche Tropenmedizinische Gesellschaft and of Deutsche Gesellschaft fur Technische Zusammenarbeit (GTZ)·1986

Area of Science:

  • Parasitology
  • Public Health
  • Tropical Medicine

Background:

  • Urine filtration and quantitative egg counts are crucial for schistosomiasis (bilharzia) surveillance.
  • Accurate diagnostic methods are essential for effective disease control programs.
  • Recent World Health Organization (WHO) recommendations on survey methodologies require critical evaluation.

Purpose of the Study:

  • To identify and discuss technical challenges associated with using nytrel filters for schistosome egg enumeration.
  • To assess the reliability of current WHO-recommended methods for schistosomiasis diagnosis.
  • To provide insights for improving schistosomiasis survey techniques.

Main Methods:

  • The study focuses on the practical application of urine filtration techniques.
  • It specifically examines the performance of nytrel filters in quantitative egg counting.
  • Field observations and technical problem analysis in Madagascar form the basis of the discussion.

Main Results:

  • Technical difficulties were encountered with the use of nytrel filters for schistosome egg detection.
  • Potential inaccuracies in quantitative egg counts using these filters were observed.
  • The findings suggest that current WHO recommendations may not be entirely suitable for all field conditions.

Conclusions:

  • The reliability of nytrel filters for schistosomiasis egg counting needs further investigation.
  • Current WHO guidelines for schistosomiasis surveys may require revision based on practical field challenges.
  • Improvements in diagnostic tools and methods are necessary for accurate disease burden assessment.

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