Dr. Polverino answers your most pressing questions about bronchitis, how contagious it is and when it may cause more serious ...

But what kind of sickness do your symptoms point to? Here's a breakdown for COVID-19, flu and more — and why testing is so ...

Being infected with COVID-19 may temporarily improve your immunity. However, it's unknown how long that protection lasts and how valuable it is against different variants of the virus. That's why a ...

You may want to avoid alcohol for a few days after getting a COVID-19 vaccine or booster. Some hangover symptoms, such as fatigue, headache, and nausea, may overlap with potential side effects of ...

The late Queen Elizabeth branded it her “annus horribilis”, but Prince William had his own more blunt description for the ...

Acute bronchitis usually develops after a cold or upper respiratory infection ... Influenza A and B, parainfluenza, respiratory syncytial virus (RSV), and coronavirus are the most common viral causes ...

Children were 50% more likely to be diagnosed with diabetes around six months after ... coronavirus infection compared to those impacted by other respiratory illnesses like seasonal influenza ...

A cold, flu, or COVID-19 infection could progress to something like pneumonia or bronchitis, which requires more intensive ...

Self-tests and over-the-counter remedies mean you don’t always need to see a doctor. Here's how to tell when you do.

"If you come in with some symptoms of cough or sore throat or runny nose, whatever it is, I can't tell you if that's a cold, if it's walking pneumonia, if it's COVID or the flu. You do need to ...