Late summer is the quiet season for respiratory illness—which makes it the ideal time for dental and medical practices to prepare for what's ahead. The CDC has already signaled that the 2026-2027 flu season could look different from the one before it, and practices that stock up and review protocols now will be in a far better position when patient and staff illness starts climbing in the fall.
Why This Season's Vaccine Looks Different
On March 13, 2026, the FDA made recommendations to update the composition of 2026-2027 U.S. influenza vaccines, and all three virus components were updated compared to those used for the 2025-2026 season. That update matters because it includes a change to protect against the influenza A(H3N2) subclade K virus that spread widely during the 2025-2026 season. That subclade drove a rough winter: by mid-December, approximately 90% of influenza A(H3N2) viruses belonged to subclade K, among U.S. samples CDC genetically characterized since late September. Pediatric outcomes reflected that severity—one regional report noted last year's flu season was considered severe, with 188 pediatric deaths nationally.
RSV and COVID-19 Are Still Part of the Picture
Flu doesn't circulate in isolation. CDC expects the upcoming fall and winter respiratory disease season in the United States will likely have a similar number of combined peak hospitalizations due to COVID-19, influenza, and RSV compared to last season. Last winter, RSV activity picked up quickly in multiple regions, with emergency department visits and hospitalizations increasing among children 0-4 years old as the season progressed. For front-desk and clinical staff, that means the fall–winter stretch will again bring overlapping waves of respiratory illness among patients and coworkers alike, not just a single flu peak.
What This Means for Your Practice
- Get ahead of staff vaccination. Coordinating flu shots for clinical and administrative staff in September or early October helps protect appointment schedules from last-minute call-outs during peak season.
- Revisit your sick-patient screening. A quick verbal screen at check-in for fever, cough, or recent respiratory symptoms can help staff decide when to reschedule non-urgent visits or adjust chairside precautions.
- Review PPE and consumable inventory early. Supply orders that take a week in July can take much longer once flu, RSV, and COVID-19 are circulating simultaneously and demand spikes nationally.
- Plan for staffing gaps. Cross-training front-desk and clinical support roles now reduces disruption if multiple team members are out sick during the same week.
The Takeaway
The 2026-2027 flu vaccine reformulation, driven by last season's dominant H3N2 subclade, is a signal worth acting on early. Practices that build in vaccination reminders, screening protocols, and supply reviews before October will be far better positioned than those scrambling once respiratory illness season is already underway.