Vaccinations are mostly about Trust

Do you trust the makers of the vaccination to have protected you and your children?
Do you trust those that dispense the vaccination to have properly handled and distrubuted the vaccinations?
Do you trust the giver of the vaccination to get all the air out of the needle before giving you the vaccination and was it properly handled and made at every single stage?

Was it refrigerated if need be right up to the moment where the person giving the vaccination blows the air out of the needle so that doesn't kill you either?

Unless you are asking all these questions then how can people take you seriously as an adult?