You can’t make a scientific claim when the very science needed to suggest it is safe hasn’t been done, and in fact those responsible refuse to do it and make excuses.

You can’t get both. Saying something is absolutely safe requires the serious, randomized placebo controlled trials that would be the beginning of showing this. And then the long term prospective comparison studies. These would be the absolute least possible to be able to back up that claim. And all of the above they refuse to do.

This isn’t to say vaccines don’t work, which some people think they don’t but I don’t see the evidence for that. There are some that seem totally ambiguous, but most work. And the very reason they do work (the adjuvants) is exactly why people are concerned about the safety an the fact that the companies responsible refuse to properly test them, and then demand legal immunity at the same time. That doesn’t pass the common sense test.