There have been reports of people getting “whatever” injection they could get, resulting in individuals having mixed vaccines, but there’s no scientific data. I suspect someone is doing research on that, though, just for pragmatic reasons if nothing else.
If Covid is truly endemic, certain regions WILL run out of particular vaccines at some point. And people will continue to move around the world. If our immune systems react radically differently to the various vaccines, we NEED to know if someone who got AZ this year can be protected by “boosters” of J&J or Moderna or whatever going forward, or if they’ll be starting from scratch.
If Covid is truly endemic, certain regions WILL run out of particular vaccines at some point. And people will continue to move around the world. If our immune systems react radically differently to the various vaccines, we NEED to know if someone who got AZ this year can be protected by “boosters” of J&J or Moderna or whatever going forward, or if they’ll be starting from scratch.