1. World Health Organization, Pandemic Influenza Preparedness Framework: Partnership contribution preparedness high-level implementation plan II 2018-2023. 2021: Geneva.
2. World Health Organization, Pandemic Influenza Preparedness Framework Partnership Contribution Implementation Plan 2013 – 2016. 2014.
3. World Health Organization, Pandemic Influenza Preparedness Framework: Partnership Contribution High-Level Implementation Plan III 2024-2030. 2023: Geneva.
4. World Health Organization, A manual for estimating disease burden associated with seasonal influenza. 2015.
5. Advances in measuring influenza burden of disease;Lee;Influenza Other Respir Viruses,2018