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If the study is based on volunteers thats even worse as there is huge selection bias there. If it is randomly sampled (As a proper analysis should be) it would be less bias but more subject to the problem I already described.
In short observational data where the vaccine is voluntary is itself going to give you bad data by its very nature unless you correct for countless things no one is even attempting to account for (I named one big and obvious one).
So all studies based on observational data are pretty much garbage (and no surprise why the CDC which has a clear agenda to sell vaccines and improve support of vaccines) is using them.
Lets face it, government agencies would never release data, no matter how convincing, that break the public trust in vaccines.
That said I'm not anti-vax, im vaccinated despite knowing the data leans towards it being ineffective against Delta. The reason is simply because I know its safe, there isnt a conspiracy, just dishonest interpitations due to natural biases. So the safety figures are largely correct, So the way I see it, why not get vaccinated since the data doesnt draw solid conclusions either way, it leans strongly to it being ineffective against Delta, but it is hardly definitive proof of that.
@Nobody@freeatlantis.com @zleap
