Use of specific pandemic influenza vaccines during the H1N1 2009 pandemic (August 2009)
Protocol for cluster investigations to measure influenza vaccine effectiveness in the EU/EEA (December 2009)
Protocols for cohort database studies to measure influenza vaccine effectiveness in the EU and EEA Member States (July 2009)
Protocols for case-control studies to measure influenza vaccine effectiveness in the EU and EEA Member States (July 2009)