https://immunizationeconomics.org/recent-activity/2026/11/6/global-return-on-investment-of-covid-19-vaccines-in-the-first-year-of-the-vaccination-programme-a-model-based-economic-evaluation/ 2026-11-06T09:53:32Z Immunization Economics en Global return-on-investment of COVID-19 vaccines in the first year of the vaccination programme: A model-based economic evaluation 2026-11-06T09:53:32Z Blog