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Decrease in incidence of hepatitis A infections in Germany.

G Frösner, H Willers, R Müller

    Infection
    |January 1, 1978
    PubMed
    Summary
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    Hepatitis A infections have declined in Germany, confirmed by antibody prevalence studies. The force of infection significantly decreased between 1945 and 1965.

    Area of Science:

    • Epidemiology
    • Infectious Diseases
    • Public Health

    Background:

    • Hepatitis A virus (HAV) infection is a significant public health concern.
    • Understanding historical infection trends is crucial for disease control.
    • Previous data suggested a decline in Hepatitis A incidence in Germany.

    Purpose of the Study:

    • To confirm the hypothesis of declining Hepatitis A infection incidence in Germany.
    • To analyze the prevalence of Hepatitis A antibodies (anti-HAV) over time.
    • To estimate the historical force of Hepatitis A infection.

    Main Methods:

    • Sera collected in North Germany in 1965 and 1975 were analyzed for anti-HAV prevalence.
    • Prevalence data were correlated with birth year and serum sampling time.

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  • A catalytic epidemic model with sigmoidal decrease was used to estimate the force of infection.

    • Main Results:

    • The prevalence of anti-HAV was confirmed to have declined.
    • Anti-HAV prevalence correlated with birth year, not sampling time.
    • The force of infection decreased from 0.04 in 1945 to 0.005 in 1965.

    Conclusions:

    • The study confirms a significant decline in Hepatitis A infections in Germany over recent decades.
    • Historical seroprevalence data and modeling provide strong evidence for reduced transmission.
    • Findings support the effectiveness of public health measures in controlling Hepatitis A.