Injected trivalent inactivated influenza vaccines are most commonly used throughout the world. Influenza antigen preparation varies between manufacturers.
Supplementary document with country case studies in relation to the ECDC operational guidance on HIV Pre-Exposure Prophylaxis in the EU/EEA and the UK: Implementation, standards and monitoring.
In collaboration with WHO Regional Office for Europe, ECDC monitors and reports on influenza activity in Europe on a weekly basis throughout the flu season.