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Bordetella pertussis serotypes in Canada.

S Toma, H Lo, M Magus

    Canadian Medical Association Journal
    |October 7, 1978
    PubMed
    Summary

    This study analyzed Bordetella pertussis strains from Canada, finding most isolates matched vaccine antigen types. This confirms current pertussis vaccines align with circulating Bordetella pertussis strains.

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    Area of Science:

    • Microbiology
    • Immunology
    • Vaccinology

    Background:

    • Bordetella pertussis causes whooping cough.
    • Understanding pertussis antigen variability is crucial for vaccine efficacy.

    Purpose of the Study:

    • To determine the major antigenic factors of Bordetella pertussis strains in Canada.
    • To compare the antigenic structure of isolates with current pertussis vaccines.

    Main Methods:

    • Tested 440 B. pertussis strains from seven Canadian provinces (1976-1978).
    • Analyzed six pertussis vaccine batches.
    • Used slide agglutination with specific antisera to detect antigenic factors 1, 2, and 3.

    Main Results:

    • 98.9% of B. pertussis isolates were serotype 1,3.
    • All tested vaccine batches were rich in the three main pertussis agglutinogens.

    Conclusions:

    • The predominant B. pertussis serotype in Canada during 1976-1978 was 1,3.
    • Current pertussis vaccines possess the key antigenic factors found in circulating strains, supporting vaccine effectiveness.

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