Flu Hospital Admissions: Week ending March 16, 2024

Interpretation of forecasts

• Reported and forecasted new influenza hospital admissions as of February 28, 2024.
• This week, 25 modeling groups contributed 29 forecasts that were eligible for inclusion in the ensemble forecasts for at least one jurisdiction. Contributing teams are listed below.
• This week's influenza forecasts should be interpreted with caution due to potential reporting delays caused by a CDC National Healthcare Safety Network (NHSN) system upgrade that took place between February 23^rd and February 27th, 2024.
• Ensemble forecasts combine forecasts from diverse models into one forecast. They have been among the most reliable forecasts in performance for previous influenza and COVID-19 forecasting efforts, but even the ensemble forecasts may not reliably predict rapid changes.
• The figure shows the number of new laboratory confirmed influenza hospital admissions reported in the United States each week from September 1 through February 24 and forecasted new influenza hospital admissions per week for this week and the next 2 weeks, through March 16. Hospitals are required to report daily laboratory-confirmed influenza hospitalizations to the National Healthcare Safety Network (NHSN). COVID-19 Guidance for Hospital Reporting and FAQs has additional details on this guidance.

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State Forecasts

State-level forecasts show the predicted number of new laboratory confirmed influenza hospital admissions per week for this week and the next 2 weeks by state. Each state forecast figure uses a different scale due to differences in the number of new influenza hospital admissions per week between states and only forecasts included in the ensemble are shown. Plots of the state-level ensemble forecasts and the underlying data can be downloaded below.

Additional forecast data and information about submitting forecasts are available.

Contributing Teams and Models