Admittedly, I don't know much about vaccine safety, but isn't it unusual to have a vaccine rolled out to millions of otherwise healthy people without any long-term studies into its safety? I understand we create new flu vaccines yearly, but my understanding is that's a slight variant of previous flu vaccines which have been proven to be safe over long periods of time – and it's only rolled out to vulnerable people who want it, not everyone under threat of not being able to travel, etc.

I think we probably should have some level of caution when taking any new drug or vaccine – especially one that is going to be rolled out to millions of people. How many times would we need to run this experiment before a 'safe' vaccine does actually cause blood clots or some similar side effect? Or are side effects from vaccines basically impossible? (I genuinely don't know).

For some context, I'm saying this as someone who now suffers from permanent side effects after taking a medication that was once deemed safe and without risk of permanent side effects so unfortunately its hard for me not to be a little hesitant.