The primary aim of this study is
* To compare immune responses after natural SARS-CoV-2 infection and COVID-19 vaccination The secondary aims are
* To compare the duration and breadth of antibody responses between natural infection and vaccination.
* To investigate the duration and breadth of B and T cellular responses between natural infection and vaccination.
* To evaluate the short and long term complications after natural infection and vaccination.
* To find out if previous infection skews the immune response after vaccination.
* To study reinfection after natural infection and vaccination.
Age
20–100
Sex
ALL
Healthy volunteers
Not accepted
You may be eligible if
subjects prioritized by national vaccination program
