All vaccines run this risk.
Someone will pay the ultimate price so that the majority can gain a benefit. Sounds like human sacrifice to me.
All vaccines have certain risks, but maybe not this one.
That is why I choose not to vaccinate my 14 year old twin daughters with this vaccine because there is no upside to it. There is nothing to be gained because my girls are celibate.
One of my daughters has lots of medical issues (brain injury, seizures, heart arrhythmia). I talked to her cardiologist about this vaccine and she even said why risk it at this point.