​Options IX was the largest international conference exclusively devoted to influenza prevention, control and treatment.

On 30 May - 1 June 2012, ECDC and the WHO Regional Office for Europe (WHO/Europe) jointly held their second Annual Influenza Working Meeting in Warsaw, Poland. The main work undertaken by delegates in over 20 sessions and 70 talks and discussions was reviewing progress in the last 12 months and agreeing on the work for the coming year.