Where does this pressure come from? I thought mutations were random, and the beneficial changes survived.
If mutations are random, mutations that can evade vaccines easily will spread more easily among vaccinated people and become dominant among them.
The vaccine encourages the production of one antibody. This makes it likely that mutations that can evade that antibody will become dominant.
I’m wondering since the natural immune system is compromised, overridden(?) in a vaxxed person and natural unspecified antibodies are not free to combat viruses and other insults to the body, what’s stopping polio, smallpox or other horrendous diseases, previously vaccinated against, from successfully attacking these people?