According to Mr Sprenger the vaccines were victims of their own success; at a time when, thanks to vaccination, some important infectious diseases such as smallpox had been eradicated in the EU, some European citizens were more aware of the vaccines' side effects than of the diseases themselves.
Sprengeri sõnade kohaselt on vaktsiinid iseenda edu ohvrid; sel ajal, kui tänu vaktsineerimisele on EList likvideeritud mõned rängad nakkushaigused nagu rõuged, teadvustavad mõned Euroopa kodanikud rohkem vaktsiinide kõrvalmõjusid kui haiguseid ise.