![(((flu shot))) and mercury by the numbers. [1024x762 - 77KB]](https://poal.co/static/images/D6o1Xc.jpg){kind=link}
To make the population mad as hatters (history.com).
To make the population [mad as hatters](https://www.history.com/news/where-did-the-phrase-mad-as-a-hatter-come-from).
To make the population mad as hatters (history.com).
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