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Circulation of influenza virus A(H1N1) in Moldavia (Romania) during 1978-1982

G Teodorovici, M Duca, A Ivan

    Virologie
    |January 1, 1983
    PubMed

    Insights

    The A(H1N1) influenza virus re-emerged in Romania, causing mild respiratory illness outbreaks primarily in school communities and young adults. Despite its reappearance after 20 years, the virus resulted in minimal complications and low mortality rates.

    Area of Science:

    • Virology
    • Epidemiology
    • Public Health

    Background:

    • The A(H1N1) influenza virus subtype resurfaced after a 20-year absence.
    • This reappearance coincided with acute respiratory disease outbreaks in Moldavia, Romania.

    Purpose of the Study:

    • To investigate the etiological role of the A(H1N1) influenza virus in observed respiratory disease outbreaks.
    • To characterize the epidemiology and clinical presentation of A(H1N1) influenza during the study period.

    Main Methods:

    • Epidemiological surveillance of respiratory illness outbreaks.
    • Identification of etiological agents, including influenza A(H1N1) virus.
    • Clinical case analysis focusing on severity and complications.

    Main Results:

    • Three distinct epidemics linked to A(H1N1) influenza occurred in the winters of 1978, 1979, and 1982.
    • Outbreaks predominantly affected school communities and young adults.
    • The A(H1N1) subtype caused predominantly mild influenza cases with minimal complications and insignificant mortality.

    Conclusions:

    • The A(H1N1) influenza virus was confirmed as the etiological agent for the studied respiratory disease outbreaks.
    • The virus caused generally mild illness, indicating a low public health threat during these specific epidemic periods.

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