{Vaccine shedding](en.wikipedia.org/wiki/Vaccine_shedding) actually is a thing, but it’s 1. only really linked to the oral polio vaccine (which itself is not common in most of the world) and 2. even then it’s extremely rare.

It also requires an attenuated virus vaccine, which means it has a zero percent chance of happening due to mRNA vaccines. In other words, it’s just more lying and fearmongering from bullshit scam artist grifters.