I was working in UAE last year.. In February, one of our office came back from Italy. In a week the whole office was sick. 2 went to hospital. This was before we knew what it was (we really don't know now because there was no test, but the symptoms matched.) November they gave us the Chinese SinoPharm vaccine (2 doses) and we were tested every 7 days from July on.
Came home, doctor said get the US vaccine.... 3 more doses of Moderna....
I assume I am invincible!.