COVID's lingering shadow faded after omicron—but not for everyone

Six years after the world first learned of COVID-19, the pandemic has faded into an unpleasant memory for many.

For others, however, it never fully ended.

A long-term study by Hiroshima University has found that while lingering symptoms became far less common after the omicron variant arrived, some people have continued to experience health problems years after infection.

The results were published in PLOS One on May 8. ...