Why did the CDC change the definition of "Vaccine"?
— Techno Fog (@Techno_Fog) November 2, 2021
We obtained CDC emails via FOIA for the answer.
CDC emails:
Our vaccine definition is "problematic and people are using it to claim the COVID-19 vaccine is not a vaccine based on our own definition"https://t.co/gCW7Flv2xA
Does that mean that vitamin D is now technically a vaccine? It is after all, “a preparation that is used to stimulate the body’s immune response against diseases.”
As usual Rep. Tom Massie was all over it. Sometimes it’s good to have a brilliant MIT grad paying attention to these bastards. He was among the first to discuss the change, noting the definition went from “immunity” to “protection”.
Check out @CDCgov’s evolving definition of “vaccination.” They’ve been busy at the Ministry of Truth: pic.twitter.com/4k2xf8rvsL
— Thomas Massie (@RepThomasMassie) September 8, 2021
According to the article referenced above, here:
Internal CDC E-Mails
CDC emails we obtained via the Freedom of Information Act reveal CDC worries with how the performance of the COVID-19 vaccines didn’t match the CDC’s own definition of “vaccine”/“vaccination”. The CDC’s Ministry of Truth went hard at work in the face of legitimate public questions on this issue.
In one August 2021 e-mail, a CDC employee cited to complaints that “Right-wing covid-19 deniers are using your ‘vaccine’ definition to argue that mRNA vaccines are not vaccines…”

There are more emails like this on the substack article.