Public Health

This is true. However, it does not change that your original statement was false.

In the US military, an anthrax vaccine was mandatory for a time upon deploying the Middle East. It is a very painful vaccine that makes anthrax survivable, but anthrax will still do a lot of damage regardless. I would say this is very similar to the results we see with the covid vaccine, though the covid vaccine is actually much more effective.

Notice I correctly use the word "vaccine" for both of these. A vaccine is simply a biological preparation that gives our immune system exposure to train against a real threat, without experiencing the adverse impacts of the real threat itself.

You may add qualifiers to the "vaccine" word, such as a "permanent, one-dose vaccine." Now you've correctly established an appropriate context to properly communicate what you mean correctly

I have found in life it is better to remain silent when I have doubt, than to spread false information.

Here is a small tip: regardless of the controversy around AI, a helpful way to use it is to state something you think as fact, and double check with the AI. This provides you with a more objective medium without needing to experience public embarrassment or offending people.

Good luck!