Observational data from Canada: Effectiveness of mRNA covid-19 vaccines was 91% against symptomatic disease and 98% against hospitalization and deaths.

Effectiveness of BNT162b2 and mRNA-1273 covid-19 vaccines against symptomatic SARS-CoV-2 infection and severe covid-19 outcomes in Ontario, Canada: test negative design study – The BMJ

Editorial: Real world effectiveness of covid-19 vaccines