Includes Those Who Oppose Forced Jabs
Its not known when the change was made, although in doing so Merriam-Webster has labeled millions of people anti-vaxxers even if they dont consider themselves to be anti-vaccination in principle.
The expanded definition means that even those who dont doubt the efficacy or safety of vaccines and personally take them, but simply oppose the government having the power to forcibly inject someone, are now anti-vaxxers.