I think vaccines are fine, and I get a flu jab every year (mainly because I'm self-employed and don't want the time off work). Also happy for my wife daughter to get what they need.
Having said that (and this is strictly a thought experiment) supposing Vaccine X did cause autism at a certain low level, but also saved lots of lives. I fully believe if this was the case governments would indulge in "the noble lie" and suppress information on side-effects, as a it would be a net-gain in lives saved.