(informal) Supporting vaccines and vaccination.

(informal) Opposition to vaccines and vaccination; reluctance or refusal to be vaccinated or to have one's children vaccinated.

(informal) Opposing vaccines and vaccination.

Having had two doses of COVID-19 vaccine.

(computing, slang) plural of VAX (“a computer system of the 1970s”)

plural of anti-vaxxer

(informal) A person who opposes vaccination, as for its purported dangerous effects.

(computing, slang, rare) The incorrect assumption that certain behaviours and memory storage conventions of the VAX (a computer system of the 1970s) are applicable on all computer architectures.

Alternative form of VAXocentrism

plural of VAXherd