2026–2027 Flu Season: ICU Preparedness for ARDS

What does this year’s flu outlook show?

In its September 23 outlook, CDC assessed that the 2026–2027 U.S. influenza season would most likely be moderate across all ages, with low to moderate confidence. CDC describes this as a preparedness outlook rather than a precise forecast. The circulating viruses, population immunity, and vaccine effectiveness can all change how the season unfolds. Southern Hemisphere activity offers context, but does not reliably predict the U.S. experience.¹

How does that compare with last year?

The 2025–2026 season was classified as moderate overall and high severity among children ages 0–17.¹ A CDC-authored analysis published in JAMA Network Open estimated 28–49 million illnesses, 360,000–740,000 hospitalizations, and 22,000–74,000 deaths using surveillance data through March 14, 2026. Those were preliminary estimates through that date, rather than final full-season totals.²

This year’s outlook therefore points toward a similar overall severity category. It does not establish that the total number of infections, hospitalizations, or deaths will match last year’s—or that every age group or community will experience the same burden.

For hospital planning, the practical lesson is straightforward: a moderate national classification still warrants preparation for critically ill patients.

When influenza becomes a critical care emergency

Influenza can cause primary viral pneumonia and can be complicated by secondary bacterial pneumonia. Either pathway can lead to acute respiratory distress syndrome (ARDS), respiratory failure, sepsis, and multiorgan failure.³

When a patient develops ARDS, the clinical challenge extends beyond treating the infection. The care team must also support gas exchange and protect injured lungs while the underlying illness is addressed. CDC recommends starting antiviral treatment as soon as possible in hospitalized patients with suspected or confirmed influenza; treatment should not wait for laboratory confirmation.⁴

This is where the flu-season conversation needs to expand: Are ICU teams prepared to recognize ARDS and deliver the respiratory support these patients may require?

Where prone therapy fits

For appropriately selected, invasively ventilated adults with ARDS, prone positioning is an established component of evidence-based care. Turning a patient onto the abdomen can improve the distribution of ventilation and reduce uneven lung stress during mechanical ventilation.⁵

The 2023 ESICM guidelines recommend early prone positioning after stabilization and optimization of ventilation when the PaO₂/FiO₂ ratio remains below 150 mm Hg, using sessions of at least 16 consecutive hours. Prone positioning is delivered alongside lung-protective ventilation and individualized critical care.⁵

The landmark PROSEVA randomized trial demonstrated why this matters. Among 466 patients with severe ARDS, 28-day mortality was 16.0% with prone positioning versus 32.8% with supine positioning. That is an absolute difference of 16.8 percentage points and a relative reduction of approximately 51%.⁶

These results came from a severe-ARDS trial, rather than a trial limited to influenza patients. They support prone positioning for eligible patients with severe ARDS, including consideration when influenza is the underlying cause; they do not establish an influenza-specific mortality reduction or a survival benefit for a particular proning device.

Prepare the team before the patient arrives

A flu readiness plan should extend through the ICU. Hospitals can review how teams identify candidates for prone positioning, initiate therapy promptly, and sustain prolonged sessions while managing the airway, vascular access, skin protection, and ongoing bedside care.

That review also creates an opportunity to assess staffing, training, and the equipment used to support patient positioning. These operational decisions should help teams carry out the clinical plan consistently.

At Turn Medical, we believe preparation for respiratory season includes preparation for prolonged prone therapy. As hospitals plan for the months ahead, we welcome conversations about prone-therapy workflows, education, and positioning support.

Connect with Turn Medical at 855-ASK-TURN or info@turnmedical.com.