Multiple eminent virologists have been warning us:
Even if the vaccines were not dangerous, mass-vaccination leads to complete chaos as focused variants develop that end-run the vaccines.
Mass vaccination in a pandemic is anti-science.
This was already demonstrated that using non sterilising vaccines (vaccines not preventing transmission) is recipe for disaster:
(1) http://www.thereadgroup.net/wp-content/uploads/Read&MackinnonStearns&KoelleaChap11.pdf