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Related Experiment Videos

Freeze-dried vaccine against Rinderpest: stability and activity study.

B Languet, P Precausta, M Mackowiak

    Comparative Immunology, Microbiology and Infectious Diseases
    |January 1, 1985
    PubMed
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    A new freeze-dried Rinderpest vaccine, derived from modified virus in cell culture, demonstrates high infectivity and stability. This vaccine meets international standards for cattle, offering robust protection against Rinderpest.

    Area of Science:

    • Veterinary Virology
    • Vaccine Development
    • Immunology

    Background:

    • Rinderpest poses a significant threat to cattle populations globally.
    • Effective vaccines are crucial for Rinderpest eradication efforts.

    Purpose of the Study:

    • To develop and characterize a stable, freeze-dried vaccine against Rinderpest.
    • To evaluate the vaccine's efficacy and stability under various conditions.

    Main Methods:

    • Preparation of a freeze-dried vaccine using modified Rinderpest virus in calf kidney cell culture.
    • Assessment of vaccine titre (10(4) CCID50/dose) and stability under thermal stress (+45°C for 3.5 days).
    • Evaluation of reconstituted vaccine stability in magnesium sulphate or saline solutions at high temperatures (up to 4h at +45°C).

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    Main Results:

    • The freeze-dried vaccine maintained a high infective titre post-lyophilization.
    • The vaccine demonstrated excellent stability, preserving infectivity even after prolonged exposure to heat.
    • Reconstituted vaccine remained stable in physiological saline at elevated temperatures.
    • Vaccine activity in cattle, confirmed by antibody titration and challenge resistance, met WHO and OIE standards.

    Conclusions:

    • A stable and effective freeze-dried Rinderpest vaccine has been successfully developed.
    • The vaccine's characteristics, including high titre and stability, make it suitable for field application.
    • The vaccine meets stringent international requirements for Rinderpest control programs.