New research firmly links the virus to multiple sclerosis, a potentially disabling chronic disease that afflicts more than 900,000 Americans and 2.8 million people worldwide.
Delta has kept some of the most successful mutations found in earlier variants, but also contains new genetic changes that enable it to spread twice as fast.
Missing educational opportunities doesn’t just deprive kids of better careers: Study after study shows that people with less education die younger than those with more.
In addition to the death toll and people suffering persistent symptoms, the pandemic has threatened the health of vulnerable people who've been devastated by the loss of jobs, homes and opportunities for the future.
A new study in the journal Nature found alarmingly high rates of opioid use among COVID survivors with lingering symptoms at Veterans Health Administration facilities.
Scientists say unprepared immune cells appear to be responding to the coronavirus with a devastating release of chemicals, inflicting damage that may endure long after the threat has been eliminated.
Anti-vaccine groups are blaming patients’ coincidental medical problems on covid shots, even when it’s clear that age or underlying health conditions are to blame.
The nation's top infectious disease expert says If a monitoring board gave the green light, vaccine manufacturers would be obligated to end their trials early and make the shots available.
With millions of lives on the line, researchers have been working at an unprecedented pace to develop a COVID-19 vaccine.