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[Recent progress in live influenza vaccine development]

Y Kino

    Nihon Rinsho. Japanese Journal of Clinical Medicine
    |November 14, 1997
    PubMed
    Summary

    Cold-adapted influenza vaccines (ca vaccine) show promise, proving more effective in seronegative individuals than inactivated vaccines. However, inactivated vaccines are preferred for the elderly population.

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    Area of Science:

    • Virology
    • Immunology
    • Vaccinology

    Background:

    • Cold-adapted influenza virus vaccines (ca vaccine) have undergone extensive research in the U.S. and Russia.
    • Ca vaccines are licensed in Russia and anticipated for U.S. licensure soon.

    Purpose of the Study:

    • To compare the efficacy of live cold-adapted influenza vaccines (ca vaccine) versus inactivated influenza vaccines across different population demographics.
    • To evaluate the performance of ca vaccines in various international clinical settings.

    Main Methods:

    • Clinical trials involving live cold-adapted influenza vaccines (ca vaccine) and inactivated influenza vaccines.
    • Efficacy assessments were conducted across seronegative, seropositive adult, and elderly populations.

    Main Results:

    • Ca vaccines demonstrate superior efficacy in seronegative populations compared to inactivated vaccines.
    • In seropositive adults, both vaccine types exhibit comparable effectiveness.
    • Inactivated vaccines are more effective in the elderly population.

    Conclusions:

    • The choice of influenza vaccine (live cold-adapted or inactivated) should be tailored to the specific population's serostatus and age group.
    • Further evaluation of ca vaccine efficacy in diverse populations and under varying epidemiological conditions is warranted.

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