Your friend believes it is a vaccine in the traditional sense, tested and administered for years and years. This is not a vaccine. Just keep telling him...not a vaccine. See if he can prove you wrong.
And when he points to the online dictionary that now has a changed definition, ask why that change happened and for whom? Prepare yourself for nausea. They changed it from being about IMMUNITY to this crap, basically saying "stimulate body's immune response". Quite different things actually
Your friend believes it is a vaccine in the traditional sense, tested and administered for years and years. This is not a vaccine. Just keep telling him...not a vaccine. See if he can prove you wrong.
It's not. you're correct. At the slightest it might be called a "treatment".
And when he points to the online dictionary that now has a changed definition, ask why that change happened and for whom? Prepare yourself for nausea. They changed it from being about IMMUNITY to this crap, basically saying "stimulate body's immune response". Quite different things actually
Here's the current MWD https://www.merriam-webster.com/dictionary/vaccine
But if you go back just a little bit, this from Feb 2006 to at least Nov 5 2020, is how it was at MWD dot com:
https://web.archive.org/web/20201105154809/https://www.merriam-webster.com/dictionary/vaccine