The tetanus vaccine takes up to 5 shots and then still usually doesn't provide lifetime sterilizing immunity. If Pfizer's COVID vaccine takes three doses before sticking, that'd still do better.
Also, none of those other diseases are current pandemics.
The tetanus vaccine takes up to 5 shots and then still usually doesn't provide lifetime sterilizing immunity. If Pfizer's COVID vaccine takes three doses before sticking, that'd still do better.
Also, none of those other diseases are current pandemics.