Vaccines have a myriad of potential risks attached to them that is something most doctors and Big Pharma and even government officials don't like to talk about. There are benefits and there are risks too.
It wasn't until 1986 that the government came clean in saying there were risks attached to the vaccines they are mandating. One risk is the failure of the given vaccine to work. The second is that they can have many side-effects like swelling, fever, irritation, cause autism and even death.