COVID Vaccines Effectiveness (CoVE): Effectiveness of Heterologous and Booster COVID-19 Vaccination in 5 European Countries, Using a Cohort Approach in Children and Adults with a Full Primary Vaccination Regimen
The aim of this project was to study waning immunity after primary COVID-19 vaccine regimens as well as booster vaccinations. The study complemented common test-negative case-control studies, using real world data pulled from other VAC4EU studies, highlighting the advantages of readiness. These data sources represent five countries across Southern, Central, and Eastern Europe, and an estimated 67 million patients.
