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  • TECHNOLOGY FEATURE

What’s your risk of catching COVID? These tools help you to find out

A look at apps that predict the chance of infection and illness depending on what you’re doing and where you are.
  1. Michael Eisenstein

    1. Michael Eisenstein is a freelance writer in Philadelphia, Pennsylvania.

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People standing apart and wearing face masks look at their phones while waiting to cross the road in Tokyo

People wearing masks in Tokyo maintain physical distancing as they wait at a pedestrian crossing. Credit: Carl Court/Getty

As an emergency physician, Megan Ranney is used to dealing with hard questions about injury and illness. But during the COVID-19 pandemic, she has found herself scrambling for answers. “I kept getting asked by people whether it was safe to do certain activities,” says Ranney. “‘Is it safe to go to the beach, or to an outdoor party or a restaurant?’”

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Nature 589, 158-159 (2021)

doi: https://doi.org/10.1038/d41586-020-03637-y

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