I had my booster last Monday. On the little card it sez "Pfizer-Comirnaty." My arm was sore for a few days (I've never had that before). Oddly, I also had a sore arm (the other one) after my flu jab the week before. But life must go on. What with all my lurgies over the last few weeks, I've had umpteen blood tests as well as a cannula stuck in my hand for days. My new nickname is pincushion.