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Articles on COVID-19 infection

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Researchers are gaining key insights into the ways that the SARS-CoV-2 virus can lead to long COVID symptoms. Catherine McQueen/Moment via Getty Images

Long COVID puzzle pieces are falling into place – the picture is unsettling

A new study finds the risks of developing long COVID declined over the first two years of the pandemic. But unvaccinated adults were more than twice as likely to get long COVID compared with those who were vaccinated.
The CDC expects the updated shots to be effective at preventing severe COVID-19, even in the face of new variants. Teka77/iStock via Getty Images Plus

CDC greenlights two updated COVID-19 vaccines, but how will they fare against the latest variants? 5 questions answered

Only time and data will tell whether the CDC-recommended reformulated shots can stand their ground against the ever-changing SARS-CoV-2 variants.
Researchers are working to develop vaccines that provide long-term immune protection from COVID-19. Marko Geber/Digital Vision via Getty Images

How long does protective immunity against COVID-19 last after infection or vaccination? Two immunologists explain

Because COVID-19 is a relatively new virus, researchers still aren’t sure exactly how long vaccines and prior infections provide protection.

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