Vaccinations may have prevented almost 20 million COVID-19 deaths worldwide | Imperial News | Imperial College London October 18, 2023 by Leo IMPACT COVID VACCINATION – Vaccinations estimated to have averted 19.8 million COVID-19 deaths worldwide in their first year, according to the latest Imperial modelling study. Source: Vaccinations may have prevented almost 20 million COVID-19 deaths worldwide | Imperial News | Imperial College London 20 million.