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Field Postmortem Rabies Rapid Immunochromatographic Diagnostic Test for Resource-Limited Settings with Further Molecular Applications
07:40

Field Postmortem Rabies Rapid Immunochromatographic Diagnostic Test for Resource-Limited Settings with Further Molecular Applications

Published on: June 29, 2020

Malaria rapid diagnostic tests in endemic settings.

J Maltha1, P Gillet, J Jacobs

  • 1Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium. jmaltha@itg.be

Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases
|February 27, 2013
PubMed
Summary

Malaria rapid diagnostic tests (RDTs) offer quick results for community health workers but have limitations in accuracy and user errors. Further development is needed for malaria elimination, focusing on lower detection limits.

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Area of Science:

  • Medical Diagnostics
  • Parasitology
  • Public Health

Background:

  • Malaria rapid diagnostic tests (RDTs) are widely used by community health workers for prompt malaria diagnosis.
  • RDTs detect Plasmodium parasite antigens, primarily PfHRP2 and pLDH, offering results within 20 minutes.
  • While effective for uncomplicated P. falciparum infections compared to routine microscopy, RDT performance varies for other Plasmodium species and at low parasite densities.

Purpose of the Study:

  • To evaluate the design limitations and end-user errors associated with malaria rapid diagnostic tests (RDTs).
  • To assess the impact of RDT performance on malaria treatment and antibiotic prescription practices.
  • To highlight the need for improved RDT quality assurance and the development of more sensitive diagnostic tools for malaria elimination.

Main Methods:

  • Review of RDT design limitations, including sensitivity, specificity, and susceptibility to various factors.
  • Analysis of end-user-related errors in RDT procedure, interpretation, and safety.
  • Examination of current quality assurance mechanisms by organizations like the World Health Organization.

Main Results:

  • RDTs exhibit design flaws such as low sensitivity at low parasite densities, prozone effects, PfHRP2 gene deletions, cross-reactions, and susceptibility to environmental conditions.
  • End-user errors encompass procedural mistakes, incorrect interpretation of results, and safety concerns.
  • Shortcomings in RDT kit labeling and instructions for use are prevalent, impacting accurate deployment.
  • While RDTs guide treatment decisions, over-prescription of antibiotics is noted, and quality assurance programs for end-user performance are lacking.

Conclusions:

  • Malaria RDTs, despite their utility, present significant design and user-related challenges that can affect diagnostic accuracy and patient management.
  • Current quality assurance efforts require enhancement, particularly in assessing end-user performance, to ensure reliable RDT use.
  • The development of highly sensitive diagnostic tools, such as nucleic acid amplification tests, is crucial for achieving malaria elimination goals.