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Botulism in China.

Y Shih, S Y Chao

    Reviews of Infectious Diseases
    |November 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Botulism outbreaks in China from 1958-1983 were primarily linked to preserved bean curd. Effective prevention strategies significantly reduced botulism incidence and mortality rates.

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    Area of Science:

    • Epidemiology
    • Foodborne Illness
    • Public Health

    Background:

    • Botulism outbreaks in China presented a significant public health challenge between 1958 and 1983.
    • Initial cases were concentrated in Xinjiang province, with a wide geographical distribution across northern and some southern provinces.

    Purpose of the Study:

    • To analyze the epidemiology of botulism in China over a 25-year period.
    • To identify common food sources, prevalent toxin types, and geographical distribution of outbreaks.
    • To evaluate the impact of control measures on botulism incidence and mortality.

    Main Methods:

    • Retrospective analysis of 986 botulism outbreaks reported between 1958 and 1983.
    • Data collection on affected individuals, mortality, geographical location, toxin types, and implicated food sources.

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  • Comparison of mortality rates before and after the implementation of prevention and treatment strategies.

    • Main Results:

    • A total of 4,377 individuals were affected, with 548 deaths. Home-made preserved bean curd was implicated in 74% of outbreaks.
    • Toxin types varied regionally: Type A in the northwest, Type B in the north, and Type E in the northeast.
    • Mortality rates decreased from 41% in the 1950s to 7.6% by 1983 due to effective interventions.

    Conclusions:

    • Home-made preserved bean curd is a major vehicle for botulism in China.
    • Regional variations in toxin types necessitate targeted surveillance and control.
    • Successful implementation of public health interventions has dramatically reduced botulism-related mortality in China.