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Why Does COVID-19 Make Some People Sicker Than Others?

Why do some young, healthy people get severely ill from COVID-19? Reporter Kaleigh Rogers explores some avenues that scientists are pursuing to get to the bottom of this mystery.

Kaleigh Rogers is a FiveThirtyEight reporter covering science, politics and technology.

Anna Rothschild is FiveThirtyEight’s senior producer for video.

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