If history is written and dictated by the winner of the war, we know it’s not accurate.
If we weren’t there we can’t certainly say it was this way or that way.
If we were actually present there in history, we still can’t be certain about happenings because how we perceive what happens may be different than how another does.
There is no way to know for sure exactly how it was.
This includes medical history.
So all of your stories about small pox/polio and the supposed needles that prevented disease and saved billions of lives is just another story.
Most people never question the stories they are given about history. Especially medicine and science history.
They believe in science and believe nobody would lie about science for profit or for psychological manipulation.
Most of what we are told about history is a lie and most of what you believe about the history of disease and injections is a made up Rockefeller marketing campaign to keep you tied to big pharma by way of fear and dependency.