Hubby and I were boostered with Moderna on Friday last week. It has knocked us both on our butt. First time for us with this reaction. First two shots were "meh"... This one left us with arms so sore we couldn't even lift 'em. Even the cat making biscuits hurt! Which of course, hurt HIS feelings! (LOL) Arms are better now, but it's flipped me into a fibro flare, so I'm still dealing now with other issues, non-related. Didn't have this with the other two shots. I'm glad I told hubby we'd wait for another 2 weeks or so for the flu and pneumonia shots! I'm assuming this all means our bodies are reacting appropriately antibody-wise. At least I hope there's a reason for us being knocked on our asses, beyond being nearly 70 years old! (LOL)