Rationality can be induced if the vaccine is highly effective. If I get my family vaccinated and learn that the neighbors died due to the disease, it will be common wisdom that they died due to poor decision making.
> it will be common wisdom that they died due to poor decision making
so when, for example, someone gets raped after a night out while intoxicated or dies due to alcohol overdose after joining a frat...is the socially acceptable response now "poor decision, didn't assess risk correctly."?