Abstract covid viruses surround the silhouette of a man standing alone against a blue background.

Most people have dormant viruses inside of them.

Mustafa Hacalaki/Getty Images

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Mustafa Hacalaki/Getty Images

Virtually every human on Earth has a slew of different types of dormant viruses in our bodies. They are remnants of past infections and are—generally—harmless. Unless they wake up, which can be triggered by extreme stress or something that severely compromises the immune system. But now, through a unique study on the immune systems of astronauts, scientists are considering broadening their ideas about what can wake up our dormant viruses…and learning what all this has to do with long COVID. 

If you liked this episode, check out our episodes on a universal flu vaccine and what scientists got wrong about covid.

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