Moderator,
thank you for reopening this.
To conclude, this is a matter of Halacha because it appears no one on this tread who is a world class expert on vaccinations equal to argue with the far, far majority of doctors and there is no one on this tread who is a Gadol, Halacha obligates everyone to follow the Galolim and the far, far majority of doctors. If a individual rav feels they are equal to our Gadolim to poskim differently, that means they feel they are equal or greater than all of the Gadolim; the fools of those rabbis and the fools of the people that follow them who will have much to answer for in the next world.