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Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus.
Most people who fall sick with COVID-19 will experience mild to moderate symptoms and recover without special treatment. However, some will become seriously ill and require medical attention.

Five things to know about the summer COVID surge—including ‘razor blade throat’

Despite an uptick in recent cases, the number of COVID-19 hospitalizations and deaths is just about at new lows, according to the most recent...

Living through the pandemic may have aged people’s brains

A new study from the University of Nottingham has found that simply living through the Covid-19 pandemic may have aged people’s brains—even if they...

What sick cats are teaching us about long COVID

A serious disease in cats may help scientists better understand long COVID in humans. The disease, called feline infectious peritonitis (FIP), is caused by a...

Did the pandemic age our brains? New study suggests it might have

The COVID-19 pandemic may have aged our brains faster—even if we were never infected with the virus—according to a new study led by researchers...

Could low Vitamin D make COVID-19 worse? What new research suggests

As COVID-19 continues to circulate in new waves, researchers are looking beyond vaccines to find other ways to protect people—especially those at higher risk. A...

COVID-19 may trigger Alzheimer’s-like brain changes—and the eye could hold the clues

A new study from Yale University reveals that COVID-19 might play a role in triggering brain changes similar to those seen in Alzheimer’s disease—and...

A new type of mRNA vaccine could make pandemic protection faster and cheaper

Scientists from the University of Pittsburgh and Pennsylvania State University have developed a new kind of mRNA vaccine that could help protect people more...

Spit or swallow? What’s the best way to deal with phlegm?

In 1821, French physician René Laennec wrote, "A spitting pot I consider as an essential part of the bedroom apparatus." Laennec, who invented the stethoscope,...

New ‘stealth’ material could make mRNA vaccines safer and more effective

Scientists at Cornell University have created a new material that could improve how mRNA vaccines work by making them safer and more efficient. This discovery...

Common drug for addiction could help treat long COVID

A drug usually used to help people recover from opioid addiction might also offer new hope for those suffering from long COVID. Researchers from Griffith...