Hospital-based influenza morbidity and mortality surveillance system for influenza-like illnesses: a comparison with national influenza surveillance systems

Authors

  • Yu Bin Seo,

    1. Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
    2. Asian Pacific Influenza Institute (APII), Seoul, Korea
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  • Joon Young Song,

    1. Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
    2. Asian Pacific Influenza Institute (APII), Seoul, Korea
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  • Hee Jin Cheong,

    1. Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
    2. Asian Pacific Influenza Institute (APII), Seoul, Korea
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  • Young Duck Cho,

    1. Department of Emergency Medicine, Korea University College of Medicine, Seoul, Korea
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  • Seong-Heon Wie,

    1. Catholic University Medical College, St. Vincent Hospital, Suwon, Korea
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  • Hye Won Jeong,

    1. Division of Infectious Diseases, Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
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  • Woo Joo Kim

    Corresponding author
    1. Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
    2. Asian Pacific Influenza Institute (APII), Seoul, Korea
    • Correspondence: Woo Joo Kim, Division of Infectious Diseases, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Guro-dong, Guro-gu, Seoul 152-703, Korea.

      E-mail: wjkim@korea.ac.kr

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Abstract

The Hospital-based Influenza Morbidity and Mortality (HIMM) surveillance system is an emergency room (ER)-based influenza surveillance system in Korea that was established in 2011. The system was established under the assumption that integrated clinical and virologic surveillance could be performed rapidly and easily at seven tertiary hospitals' ER. Here, we assessed the correlation between data generated from the HIMM surveillance system and the Korean national influenza surveillance systems during the 2011–2012 influenza season using cross-correlation analysis and found strong correlations. Rapid antigen-test-based HIMM surveillance would predict the start of influenza epidemic earlier than pre-existing influenza-like-illness-based surveillance.

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