25/03/2026
Influenza Vaccine Update 2026–2027 (Northern Hemisphere)
The World Health Organization has recommended the trivalent seasonal influenza vaccine to ensure effective protection against circulating viruses.
The vaccine targets:
• Influenza A (H1N1)pdm09-like virus
• Influenza A (H3N2)-like virus
• Influenza B (Victoria lineage)-like virus
Vaccine composition may vary slightly depending on the manufacturing platform (egg-based vs cell culture/recombinant technologies), but all formulations are designed to provide protection against the most prevalent strains.
Annual influenza vaccination remains the most effective way to prevent severe illness, complications, and hospitalization, especially among high-risk groups such as children, older adults, pregnant women, and people with chronic diseases.