noun which may take the genitive case particle 'no', noun
anti-vax; anti-vaccine
Colloquial abbreviation of 反ワクチン. Used attributively (e.g., 反ワクの人) or as a noun referring to anti-vaccine people or views.
See also: 反ワクチン
SNSで反ワクの主張が広がっている。
Anti-vax claims are spreading on social media.
彼は反ワクだから、ワクチンを打っていない。
He's anti-vax, so he hasn't gotten vaccinated.