Dear Dr. Roach: What is the difference between a cold and the flu? — A.T.R. Answer: Both colds and influenza (the “flu”) are respiratory illnesses that are caused by viruses. Influenza is caused ...

Dear A.T.R.: Both colds and influenza (the "flu") are respiratory illnesses that are caused by viruses. Influenza is caused specifically by the influenza viruses, which come in two main types (A and B ...

ANSWER: Both colds and influenza (the “flu”) are respiratory illnesses that are caused by viruses. Influenza is caused specifically by the influenza viruses, which come in two main types (A and B).

Q My wife started getting sick a few days before Halloween. We were worried that it was going to turn into a bad respiratory illness, but it stayed in her nose and throat. That’s a common cold, right?

Flu season is starting to tick up in the U.S. And, looking at clues from other countries, we may be in for a rough winter. But not all influenza is the same. And there are some notable differences ...

It's flu season right now, and the U.S. is in the midst of a wave that's straining hospitals. But not all influenza is the same. There are some notable differences between flu A and flu B strains. On ...