Risk/reward assessments and do research.

Lot of vaccinated diseases can kill you before you know it. If the risk doesn't compare then the vaccine is likely worth it. Put people's posited less-than-medically-mainstream to as much scrutiny, because a LOT of medical science is truly correct and legitimate, and tends to get exposed to a lot more people that might whistleblow.

In general, the deception in medicine tends to be less about fabricated science and fabricated treatments, and more about withholding of what could be.

Also, can talk to people that lived long enough to see many of these now mostly eradicated diseases killing people. Just look at your data and do your risk reward assessments honestly.