COVID-19, influenza, RSV, and norovirus—have created what experts are calling a "quad-demic" in the U.S. Here's what to know ...

Four viruses are circulating in the U.S., sparking concerns of a possible “quademic.” Here’s what to know about risk factors ...

As the flu season goes into overdrive, how do you know if you have the viral infection or another of the nasty diseases that ...

In the throes of winter's yearly round of respiratory virus outbreaks, it pays to remember what Grandma told you.

According to the CDC, the number of people going to doctors with illnesses the flu, RSV and COVID is surging. Epidemiologist Katelyn Jetelina joins John Yang to discuss why this year’s sick season is ...

You, my friend, are what scientists call a "holobiont"- an organism made up of human cells and the multiplicity of ...

Another illness you should look out for is a gastrointestinal virus called norovirus. McComb said this virus can cause lots ...

— The flu, caused by influenza viruses that are always changing, leads to fever, chills, cough, sore throat, runny nose, body ...

During cold and flu season, it can be challenging to differentiate illnesses like the common cold, flu, COVID-19, respiratory syncytial virus (RSV), and norovirus.