Global production capacity of seasonal influenza vaccine in 2011

► Influenza vaccines effectively reduce the impact of seasonal epidemics and pandemics. ► Higher demand for seasonal influenza vaccine is essential for pandemic preparedness. ► We compared 2011 global capacity and actual production with 2009 data. ► Global production capacity increased by 62% while actual production by only 8%. ► Major geographic imbalances in production and access to vaccine remain.