One of the few drug trials for a possible long Covid ended in disappointment. But lessons are leading to a second chance.

Influenza, or the flu, is a contagious respiratory virus. It can be a severe illness that affects the nose, throat and sometimes lungs. Symptoms of influenza are sore throat, cough, congestion ...

Infants, toddlers and preschoolers exhibit symptoms of long COVID, but the symptoms can be different and more difficult to ...

While most people will clear the virus and get a negative antigen test result within 10 days, some people may keep testing positive for longer than that, experts tell TODAY.com. And if you keep ...

The coronavirus pandemic looks a lot different from a few years ago. We have a vaccine, bivalent booster shots, COVID treatments and more of an understanding of the highly contagious virus. But a ...

The covid-19 pandemic changed our lives, and the world, in many ways - and now we are starting to understand its wider ...

COVID: symptoms and how long it's contagious. COVID is familiar to most, having started about five years ago and caused a pandemic, killing millions around the world.