Influenza Updates for 2026
As flu season intensifies, infection preventionists remain central to protecting patients and healthcare teams. The CDC has classified this season as moderately severe, with more than 5,000 deaths, including nine pediatric deaths, one in Kentucky. Vaccination continues to be the strongest defense, and the CDC recommends that everyone aged ≥6 months, barring medical contraindications, receive the influenza vaccine. Current influenza vaccines are produced using egg‑based, cell‑based, and recombinant technologies. Egg‑based production—still the most common—grows viruses in fertilized chicken eggs, while cell‑based vaccines use mammalian cell cultures, and recombinant vaccines use genetic sequencing rather than live virus growth. Since the 2023-2024 influenza season, the CDC no longer recommends additional safety measures for individuals with egg allergies as evidence shows severe allergic reactions are unlikely. Each year global surveillance data, genetic and…









