Related Experiment Video

Updated: Aug 8, 2026

An Optimized Hemagglutination Inhibition (HI) Assay to Quantify Influenza-specific Antibody Titers
06:34

An Optimized Hemagglutination Inhibition (HI) Assay to Quantify Influenza-specific Antibody Titers

Published on: December 1, 2017

Update: influenza activity--United States and worldwide, 1992

    MMWR. Morbidity and Mortality Weekly Report
    |October 30, 1992
    PubMed

    Insights

    Influenza A(H3N2) viruses caused epidemic levels of activity globally during the 1991-92 season. This report details worldwide influenza activity and U.S. surveillance data from October 1991 to September 1992.

    Area of Science:

    • Virology
    • Epidemiology
    • Public Health

    Background:

    • Influenza A(H1N1), A(H3N2), and influenza B viruses circulated globally during the 1991-92 influenza season.
    • Moderate levels of influenza activity were reported worldwide.
    • Influenza A(H3N2) was the predominant subtype associated with epidemic activity in the Northern Hemisphere from October 1991 to February 1992.

    Purpose of the Study:

    • To summarize global influenza activity from March through September 1992.
    • To present influenza surveillance data for the United States from October 1991 through September 1992.

    Main Methods:

    • Surveillance data collection from global influenza centers.
    • Analysis of reported influenza activity and virus circulation patterns.
    • U.S. influenza surveillance data compilation.

    Main Results:

    • Influenza A(H3N2) was commonly associated with epidemic levels of activity in the Northern Hemisphere.
    • Continued circulation of influenza A(H1N1), A(H3N2), and influenza B viruses worldwide.
    • Summary of worldwide and U.S. influenza activity for the specified periods.

    Conclusions:

    • The 1991-92 influenza season was characterized by moderate global activity.
    • Influenza A(H3N2) played a significant role in epidemic influenza during the Northern Hemisphere's winter months.
    • Ongoing surveillance is crucial for monitoring influenza virus circulation and impact.

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