Study design and cohort definition
death
SEQUELAE, SARS-COV-2 INFECTION
We emulated a target trial to compare the risk of SARS-CoV-2 infection and its sequelae, i.e., hospitalisation and death in individuals who received the BNT162b2 vaccine with those who received the ChAdOx1 vaccine. We included individuals between 18 to 89 years of age, who received their first covid vaccination with either of these two vaccines from January 1, 2021, to August 31, 2021, and had at least two years of continuous enrolment with a general practice prior to entering the study. The details of vaccination records were based on the READ code in IMRD (Additional file 