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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.

Vaccination reduces long COVID risk by 70%, new study finds

A new study led by Washington University School of Medicine in St. Louis has found that the risk of developing long COVID has decreased...

Reinfections of COVID-19 likely as severe as initial infection, study finds

A recent study has analyzed health data from nearly 213,000 Americans who experienced reinfections with the virus causing COVID-19. Researchers found that individuals who had...

COVID-19 reinfections show similar severity to original cases, study finds

A recent study suggests that if you get reinfected with the virus that causes COVID-19, the severity of the second infection will likely be...

Scientists develop “invisible mask” to block 99.8% of airborne viruses

A groundbreaking invention by a University of Michigan startup, Taza Aya, has introduced a new way to protect workers from airborne viruses. This technology, called...

How dexamethasone saves lives in severe COVID-19

Dexamethasone has become a crucial drug in treating severe COVID-19, but patients' responses to it vary widely. Researchers at the German Center for Neurodegenerative Diseases...

Why older people suffer more from severe COVID-19

For over four years, a crucial question has puzzled researchers in the fight against COVID-19: Why does the infection cause severe disease in older...

Think you have COVID? Wait two days to test for better accuracy

If you feel COVID-19 symptoms, you might be tempted to test right away. However, new research suggests that waiting two days could give you a...

Why some people don’t get COVID-19

Researchers at Massachusetts General Hospital have uncovered a promising new approach to stroke therapy using non-invasive laser light treatment. Published in the journal Stroke, this...

Common causes of cystic fibrosis people should know

Cystic fibrosis (CF) is a genetic disorder that mainly affects the lungs and digestive system, leading to severe respiratory and nutritional issues. It's a condition...

Best time to use rapid tests for COVID-19, flu, and RSV

In many U.S. households, leftover COVID tests have become a common sight. When symptoms of illness appear, questions naturally follow: When should I test? How...