There was a little of this from an early measles vaccine, where a small percentage of people who got it became extra sensitive to adult measles years down the line. They revaccinated everybody who got that one with the newer, better one and it’s been fine ever since.
Given that all vaccine candidates that are close to roll-out more closely replicate a viral infection than that one did, I am not terribly worried, and I will take that as a future possibility to watch for and possibly need to get revaccinated for over the known risks of getting infected and spreading it to vulnerable people.
There was a little of this from an early measles vaccine, where a small percentage of people who got it became extra sensitive to adult measles years down the line. They revaccinated everybody who got that one with the newer, better one and it’s been fine ever since.
Given that all vaccine candidates that are close to roll-out more closely replicate a viral infection than that one did, I am not terribly worried, and I will take that as a future possibility to watch for and possibly need to get revaccinated for over the known risks of getting infected and spreading it to vulnerable people.