Thus , it is impossible to eradicate a vaccine - preventable disease through voluntary vaccination if people act in their own self - interest .
If the disease is contagious , it could then begin spreading again among non-vaccinated individuals .
It is impossible to eradicate a vaccine - preventable disease through voluntary vaccination if people act in their own self - interest .
If the disease is contagious , it could then begin spreading again among non-vaccinated individuals .