Again, depends on age, condition. I'm currently fighting long COVID symptoms that have showed up after vaccination. I never had COVID, but the vaccine has given me - chronic fatigue - chronic headaches - brain fog. From JJ vaccine.

If you look into the Australia, Canada and Norway data you see that the numbers are higher than initially expected. Serious side effects like TTS were thought to happen around 1 in 100k, but they now think it would be something like 1 in 20 000. Perhaps less, if you account for people that don't even realise they're getting it.

The vaccine are something like 5x reduction in mortality, but they are not perfect.

lol that's the same logic that resulted in 100M passwords and credentials being leaked....again and again and again.....

mistakes are normal, to assume none is truly unfathomably dense....

A large sample size provides more conclusive results than does a small sample size.

In the case of Coronavirus vaccines, the sample size is 1/3 the population of Earth.

If hundreds of millions of vaccinated people were developing heart problems it would be noticeable.