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An adorable 12-year-old from Mexico, Marco Arturo, calls himself a scientist. Now, he’s a viral sensation as well, with his English-language video making fun of anti-vaccine advocates being viewed more than four million times.

Arturo sets up the joke by saying he’ll be discussing a very delicate topic, alleging that everyone has been “lied to by doctors and pharmaceutical companies about vaccines.”

“After a lot of research, I realized that vaccines do and will cause autism,” he says, holding up what he claims is his folder full of his findings.

He explains to viewers that he’ll walk them through each piece of evidence, as it’s very extensive.

When he opens the folder, the “evidence” consists of a series of blank pages.

“I think it might be because there is absolutely no evidence to support the statement that vaccines are linked to autism in any way whatsoever,” he says.

“So please, vaccinate your children,” Arturo pleads.

The video closes with yet another joke by the precocious science enthusiast – this one a knockout visual pun.

Marco Arturo, peace out!

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