There are hundreds of deaths everyday from many preventable causes, we generally don't force people to take medications or change their lifestyle to reduce them.
These kind of hyper libertarian arguments always just conveniently ignore everyone except the person making them. We allow smoking because it's your choice but not in public places because that hurts others. We have speed limits because your liberty to drive at 120 ends when it endangers other drivers. We have no restrictions on how much fast food you can eat because it does not impact anyone else.
In the developed world, not many people die from diseases that are preventable by vaccine. Well, until now.