The document “Guide to revision of national pandemic influenza preparedness plans – Lessons learned from the 2009 A(H1N1) pandemic” provides guidance for countries on how to improve and update their national pandemic preparedness plans. It is based on lessons learned from the 2009 influenza pandemic and aims to help governments strengthen their readiness for future pandemics. The report outlines key components of effective pandemic planning, including risk assessment, coordination between sectors, communication strategies, healthcare system preparedness, vaccination and antiviral strategies, and business continuity planning. It also emphasizes the importance of international cooperation and flexible planning that can adapt to different pandemic scenarios. Overall, the guide serves as a framework to support countries in developing stronger, more coordinated responses to future influenza pandemics.