The much-anticipated arrival of a vaccine for severe peanut allergy is still unfulfilled. There seem to be too many unresolved issues with the vaccines currently being tested — whether they be injectable or oral vaccines.

Safety concerns and avoidance of unwanted reactions are instrumental in this delay.

Enter nanoparticle technology. Perhaps because the amount of peanut protein used in nanoparticle vaccines is so small, there have been no severe reactions to the vaccine. Also, early studies show that the nano-vaccine provides as good protection from peanut allergy as the traditional mega-protein vaccine.