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I had this idea when I was 7. I would spend all day outside and get tons of mosquito bites, but also sometimes I would go to the doctor to get shots. They seemed to me to be not entirely different things, so I would wonder why they couldn't just put the shots into mosquitos, since they didn't hurt as much.

And it turns out, you can!

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They're not putting shots into the mosquitos. They're modifying the parasite the mosquito injects that lives in your liver.

When you were 7, did you yearn for modified parasites?

To be honest yes, lots of super hero stories about them. Though to be fair they're called symbiotes when they're helpful.

My (just turned) 8 year old wants a box he can put any two animals in to breed them to make a hybrid.

His example was a cat and a slug. He would absolutely love modified parasites.

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