They told me they could only update the original, not a copy. Fortunately, that's the one I brought.
I also learned an interesting thing about the boosters: The Pfizer booster is the same dose as the first two shots, but the Moderna booster is 1/2 the dose. I have no idea why.
I also learned an interesting thing about the boosters: The Pfizer booster is the same dose as the first two shots, but the Moderna booster is 1/2 the dose. I have no idea why.