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Coronavirus

Could Covid-19 usher in a new era of working from home?

Millions of people have been forced to work remotely — but experts say the practice won’t necessarily stick

How disease sleuths are using genomics to track the coronavirus

Rapid sequencing of viral genomes can help public health officials figure out the origins, spread and nature of quickly moving epidemics

What is a cytokine storm?

An immune reaction gone wild seems to be linked with the most severe cases of pandemic Covid-19. Here’s what happens.

An old problem: How immune responses weaken with age

The body’s defenses lose flexibility and diversity over time, and protective responses to vaccines weaken as well. Scientists are working on ways to boost seniors’ protections against influenza, the novel coronavirus and other pathogens.

Digital disease surveillance: Tracking a pandemic

Social media posts and online searches may offer vital clues about the spread of influenza — and now Covid-19. But they also risk errors and threaten privacy.

Closing in on the new coronavirus

The eye-catching spikes sticking out from the surface of SARS-CoV-2 may inspire new ways to prevent or treat Covid-19 infections