More than four years since the coronavirus ignited a global pandemic, the virus officially named SARS-CoV-2 keeps evolving — and so does our understanding of how it works. Some of our early ...

Two-thirds of people with post-COVID-19 syndrome have persistent, objective symptoms – including reduced physical exercise capacity and reduced cognitive test performances – for a year or more, with ...

MRI scans reveal that people who lose their sense of smell after COVID-19 show measurable changes in brain regions tied to emotion and sensory processing, offering new clues to the lingering effects ...