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Related Experiment Videos

Comparison studies on potency tests for rabies vaccines.

T J Wiktor, P Atanasiu, M Bahmanyar

    Developments in Biological Standardization
    |January 1, 1978
    PubMed
    Summary

    This study evaluated methods for a new standard rabies vaccine. A close correlation between labs suggests the NIH test, antibody-binding, and mouse antibody levels are reliable for vaccine evaluation.

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    Area of Science:

    • Virology
    • Immunology
    • Vaccinology

    Background:

    • Developing a new standard reference rabies vaccine is crucial for global public health.
    • Human diploid cell culture rabies vaccines require robust evaluation methods.
    • International collaboration is essential for standardizing vaccine assessment.

    Purpose of the Study:

    • To evaluate and compare experimental procedures for selecting a new standard reference rabies vaccine.
    • To assess the reliability of different immunological assays in a multi-laboratory setting.
    • To establish standardized methods for rabies vaccine potency and immunogenicity testing.

    Main Methods:

    • Collaborative study involving eleven laboratories across eight countries and four continents.
    • Evaluation of the NIH potency test in mice.

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  • Assessment of antibody-binding techniques (mouse inoculation and tissue culture methods).
  • Measurement of virus-neutralizing antibody levels in mice.
  • Analysis of antibody induction in human volunteers.
  • Comparison of four rabies antibody determination methods: mouse inoculation, rapid fluorescent focus inhibition, plaque reduction, and complement fixation.

    • Main Results:

    • A close correlation was observed between results from different international laboratories.
    • The evaluated methods showed varying degrees of agreement in assessing rabies vaccine characteristics.
    • Standardized results were achieved by expressing International Units against WHO reference preparations.

    Conclusions:

    • The NIH potency test, antibody-binding technique, and antibody levels in mice used for the NIH test are recommended for future rabies standard vaccine evaluation.
    • Standardization of rabies vaccine testing across laboratories is achievable and necessary.
    • The study provides a foundation for selecting and validating new rabies vaccine standards.