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Related Experiment Videos

[Application of the 3 R]

Susanne Schober-Bendixen1

  • 1Fa. Immuno AG, A-Orth/Donau.

ALTEX
|January 1, 1997
PubMed
Summary

Animal testing for tick-borne encephalitis (TBE) vaccine quality control has been significantly reduced using the 3Rs principles. Further reductions are expected with new vaccines, minimizing animal suffering.

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Area of Science:

  • Veterinary Medicine
  • Immunology
  • Toxicology

Background:

  • Animal testing is crucial for vaccine quality control.
  • The 3Rs principles (Replacement, Reduction, Refinement) guide ethical animal use.
  • Tick-borne encephalitis (TBE) vaccine quality control traditionally involved significant animal use.

Purpose of the Study:

  • To detail the successful implementation of the 3Rs in TBE vaccine quality control.
  • To quantify the reduction in animal usage over 15 years.
  • To project future reductions with new vaccine development.

Main Methods:

  • Systematic replacement, reduction, and refinement of animal experiments.
  • Development and validation of alternative testing methods.
  • Collaboration with regulatory authorities to approve new testing protocols.

Main Results:

  • Reduced animal use from 4,278 to 2,011 per vaccine lot, saving 34,005 animals annually.
  • Planned changes could further reduce usage to 961 animals per lot, saving 49,755 annually.
  • A new TBE vaccine requires only 531 animals per lot, an ~90% reduction.

Conclusions:

  • Intensive search and validation of replacement tests enabled regulatory approval for reduced animal testing.
  • While total elimination of animal tests may not be feasible, the 3Rs significantly reduce animal numbers and suffering.
  • The primary aim is to minimize animal suffering to the lowest possible level.

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