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Saturday, March 08, 2025 Text is available under the CC BY-SA 3.0 licence.

Jonas Salk

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There are three stages of truth. First is that it can't be true, and that's what they said. You couldn't immunize against polio with a killed-virus vaccine. Second phase: they say, "Well, if it's true, it's not very important. And the third stage is, 'Well, we've known it all along."

 
Jonas Salk

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