1. United Nations Children's Fund.The State of the World's Children 2023: For every child vaccination [Internet]. Florence.2023.https://www.unicef.org/media/108161/file/SOWC‐2023‐full‐report‐English.pdf
2. Global measles mortality, 2000–2008;Centers for Disease Control and Prevention (CDC);Morb Mortal Wkly Rep,2009
3. Role of vaccination in economic growth;Quilici S;J Mark Access Health Policy,2015
4. The contribution of vaccination to global health: past, present and future
5. Routine Vaccination Coverage — Worldwide, 2021