... I'll take the one-in-more-than-a-million risk...
I appreciate your PSA. The odds are in favor of most people getting vaccines. If I understand correctly, vaccines are required for workers in the fields of health care and medicine.
This is primarily to benefit those in their care who have allergies or compromised immune systems that preclude them from getting vaccinated themselves. These individuals can still be protected through "herd immunity."
One predictable outcome of significant pockets of society opting out of vaccination:
outbreaks.
