bitsandbobs
Über Member
The most interesting point to me as a complete layman (thicko!) in this kind of thing was the fact that the new vaccines being developed against corona using RNA ought to be safe from long-term effects. It (RNA) is so unstable that after injection within a very short period of time it just disappears. It survives only long enough to trigger the body's immune system and is then gone. The body, however, remembers it and reacts accordingly if it encounters the corona virus.
One of the challenges in using RNA is actually to get it to persist long enough. RNA doesn't itself trigger the immune system btw - that was another hurdle to the use of RNA vaccines - how to render it less immunogenic.