What dictionary were you using that said vaccine meant FULL immunity? I’ve never read that anywhere. Genuinely. 

Below is the definition from Webster’s II New Riverside University Dictionary copyright 1984 https://image.nostr.build/c0bf0a6d8e99dc1c5347c3b7e9d64ebe01bf09879eb351b8777d3dbacb70f2c5.jpg