In case you are talking about the COVID vaccine, no, that was not demonstrated to be effective, it was claimed to be. Big difference, especially when Pfizer then wanted a moratorium of 70 YEARS to release the full trial data.

Also, even if they were effective, there was no evidence that they were also safe and didn’t cause any long-term side effects, because such a study was impossible to carry out given the speed at which these vaccines were developed. In fact, the usual requirement for these studies to be done before the product could be put on the market were deliberately waived in order to roll them out as quickly as possible.

People were right to be skeptical of this, and they were right to protest being forced to take them. The people who blindly trusted “the science” are, in fact, the Brawndo consumers here.