Is that the one updated with the omicron variant? My 1st 3 jabs were Pfizer, and this one was Moderna. It may be coincidence, but I had the “worst” side effects with this one. I quoted “worst” because it’s relative; the 1st 3 were basically not much for me. With this updated I had low grade fever, mild chills and body aches. It all lasted about 16 hours. Glad I got it. With my wife being a teacher we’re preparing for a surge in cases after Thanksgiving, and then Christmas/New Years.