Effectiveness of Pfizer-BioNTech COVID-19 mRNA vaccine against severe illness in the elderly in Finland

The objective is to study the effectiveness of Pfizer-BioNTech COVID-19 mRNA vaccine against severe COVID-19 disease in the elderly by using real-world data collected in population-based national health registers in Finland.

Lupaan tehdyt muutokset: Käsittelijöiden muuttaminen; Muuttujien lisäys