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Value Health . Consultations for Influenza-Like Illness in Primary Care in The Netherlands: A Regression Approach

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  • Value Health . Consultations for Influenza-Like Illness in Primary Care in The Netherlands: A Regression Approach


    Value Health


    . 2021 Jan;24(1):11-18.
    doi: 10.1016/j.jval.2020.10.013. Epub 2020 Dec 9.
    Consultations for Influenza-Like Illness in Primary Care in The Netherlands: A Regression Approach


    F Christiaan K Dolk 1 , Pieter T de Boer 2 , Lisa Nagy 3 , Gé A Donker 4 , Adam Meijer 5 , Maarten J Postma 6 , Richard Pitman 3



    Affiliations

    Abstract

    Objectives: To estimate the general practitioner (GP) consultation rate attributable to influenza in The Netherlands.
    Methods: Regression analysis was performed on the weekly numbers of influenza-like illness (ILI) GP consultations and laboratory reports for influenza virus types A and B and 8 other pathogens over the period 2003-2014 (11 influenza seasons; week 40-20 of the following year).
    Results: In an average influenza season, 27% and 11% of ILI GP consultations were attributed to infection by influenza virus types A and B, respectively. Influenza is therefore responsible for approximately 107 000 GP consultations (651/100 000) each year in The Netherlands. GP consultation rates associated with influenza infection were highest in children under 5 years of age, at 667 of 100 000 for influenza A and 258 of 100 000 for influenza B. Influenza virus infection was found to be the predominant cause of ILI-related GP visits in all age groups except children under 5, in which respiratory syncytial virus (RSV) infection was found to be the main contributor.
    Conclusions: The burden of influenza in terms of GP consultations is considerable. Overall, influenza is the main contributor to ILI. Although ILI symptoms in children under 5 years of age are most often associated with RSV infection, the majority of visits related to influenza occur among children under 5 years of age.

    Keywords: disease burden; regression.

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