There was significant concern for a number of years, which resulted in significantly reduced take-up of the MMR vaccine. However, the original Lancet paper was eventually shown to be fraudulent, no other study has been able to replicated the findings, and the author had a massive conflict of interest.
But don't take my word for it:
Lancet MMR autism fraud - Wikipedia
How the case against the MMR vaccine was fixed | The BMJ
I think that it’s probably going to be best if we leave the debate around the MMR vaccine there for now.
It is probably worth reading the link above but I don’t think it’s going to change many opinions and it isn’t really relevant to what’s being discussed here anyway which is the situation as it is now.
If people are hesitant about getting Covid jabs at the moment then that is relevant and to a point is worth discussing (constructively!) but that’s current and relevant.
Thanks everyone.